diff --git a/src/main/java/net/minecraftforge/common/ForgeVersion.java b/src/main/java/net/minecraftforge/common/ForgeVersion.java
index 484be8b528..feccc96c5c 100644
--- a/src/main/java/net/minecraftforge/common/ForgeVersion.java
+++ b/src/main/java/net/minecraftforge/common/ForgeVersion.java
@@ -31,15 +31,17 @@ import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
-import org.apache.logging.log4j.Level;
+import net.minecraftforge.fml.common.versioning.DefaultArtifactVersion;
+import net.minecraftforge.fml.common.versioning.VersionRange;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
 import com.google.common.io.ByteStreams;
 import com.google.gson.Gson;
 
-import net.minecraftforge.fml.common.FMLLog;
 import net.minecraftforge.fml.common.InjectedModContainer;
 import net.minecraftforge.fml.common.Loader;
 import net.minecraftforge.fml.common.ModContainer;
@@ -60,6 +62,7 @@ public class ForgeVersion
     //This number is incremented every time Jenkins builds Forge, and never reset. Should always be 0 in the repo code.
     public static final int buildVersion    = 0;
     // This is the minecraft version we're building for - used in various places in Forge/FML code
+    // Update version compatibility list below if there is SRG compatibility between this version and some previous versions
     public static final String mcVersion = "1.12.1";
     // This is the MCP data version we're using
     public static final String mcpVersion = "9.41";
@@ -68,6 +71,12 @@ public class ForgeVersion
     @SuppressWarnings("unused")
     private static String target = null;
 
+    /*
+     * Version compatibility. Add new version strings for each version we're SRG compatible with.
+     * Reset the list to empty only when incompatible changes occur.
+     */
+    private static String[] extraCompatibleVersions = { "1.12" };
+
     private static final Logger log = LogManager.getLogger("ForgeVersionCheck");
 
     public static int getMajorVersion()
@@ -107,6 +116,15 @@ public class ForgeVersion
         return String.format("%d.%d.%d.%d", majorVersion, minorVersion, revisionVersion, buildVersion);
     }
 
+    // We add in the current version (we're compatible with it) and test additional versions for compatibility
+    private static List<DefaultArtifactVersion> COMPATIBLE_VERSIONS = Stream.concat(Stream.of(mcVersion), Stream.of(extraCompatibleVersions))
+            .map(s -> new DefaultArtifactVersion("dummy", s)).collect(Collectors.toList());
+
+    // Tests the mod supplied version range for compatibility with our version compatibility list
+    public static boolean testMinecraftVersionCompatibility(VersionRange modVersion) {
+        return COMPATIBLE_VERSIONS.stream().anyMatch(modVersion::containsVersion);
+    }
+
     public static enum Status
     {
         PENDING(),
diff --git a/src/main/java/net/minecraftforge/fml/common/FMLModContainer.java b/src/main/java/net/minecraftforge/fml/common/FMLModContainer.java
index c7b1577a2a..e8a1d15fc4 100644
--- a/src/main/java/net/minecraftforge/fml/common/FMLModContainer.java
+++ b/src/main/java/net/minecraftforge/fml/common/FMLModContainer.java
@@ -67,7 +67,6 @@ import java.util.function.Function;
 import com.google.common.base.Strings;
 import com.google.common.collect.ArrayListMultimap;
 import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableList.Builder;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.ListMultimap;
@@ -256,16 +255,7 @@ public class FMLModContainer implements ModContainer
         }
 
         String mcVersionString = (String)descriptor.get("acceptedMinecraftVersions");
-        if ("[1.8.8]".equals(mcVersionString)) mcVersionString = "[1.8.8,1.8.9]"; // MC 1.8.8 and 1.8.9 is forward SRG compatible so accept these versions by default.
-        if ("[1.9.4]".equals(mcVersionString) ||
-            "[1.9,1.9.4]".equals(mcVersionString) ||
-            "[1.9.4,1.10)".equals(mcVersionString) ||
-            "[1.10]".equals(mcVersionString))
-                mcVersionString = "[1.9.4,1.10.2]";
-        if ("[1.11]".equals(mcVersionString))
-            mcVersionString = "[1.11,1.11.2]";
-        if ("[1.12]".equals(mcVersionString))
-            mcVersionString = "[1.12,1.12.1]";
+
         if (!Strings.isNullOrEmpty(mcVersionString))
         {
             minecraftAccepted = VersionParser.parseRange(mcVersionString);
diff --git a/src/main/java/net/minecraftforge/fml/common/Loader.java b/src/main/java/net/minecraftforge/fml/common/Loader.java
index 5646f8b36c..e484d477c3 100644
--- a/src/main/java/net/minecraftforge/fml/common/Loader.java
+++ b/src/main/java/net/minecraftforge/fml/common/Loader.java
@@ -26,7 +26,6 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.net.MalformedURLException;
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.Comparator;
 import java.util.Iterator;
 import java.util.List;
@@ -35,6 +34,7 @@ import java.util.Properties;
 import java.util.Set;
 
 import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.common.ForgeVersion;
 import net.minecraftforge.common.capabilities.CapabilityManager;
 import net.minecraftforge.common.config.ConfigManager;
 import net.minecraftforge.common.crafting.CraftingHelper;
@@ -62,7 +62,6 @@ import org.apache.commons.io.IOUtils;
 import org.apache.logging.log4j.Level;
 
 import com.google.common.base.CharMatcher;
-import java.util.function.Function;
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
 import com.google.common.collect.ArrayListMultimap;
@@ -238,9 +237,9 @@ public class Loader
             ArrayListMultimap<String, String> reqList = ArrayListMultimap.create();
             for (ModContainer mod : getActiveModList())
             {
-                if (!mod.acceptableMinecraftVersionRange().containsVersion(minecraft.getProcessedVersion()))
+                if (!ForgeVersion.testMinecraftVersionCompatibility(mod.acceptableMinecraftVersionRange()))
                 {
-                    FMLLog.log.fatal("The mod {} does not wish to run in Minecraft version {}. You will have to remove it to play.", mod.getModId(), getMCVersionString());
+                    FMLLog.log.fatal("The mod {} does not wish to run in Minecraft version {}. It is compatible with {}. You will have to remove it to play.", mod.getModId(), getMCVersionString(), mod.acceptableMinecraftVersionRange());
                     WrongMinecraftVersionException ret = new WrongMinecraftVersionException(mod, getMCVersionString());
                     FMLLog.log.fatal(ret.getMessage());
                     wrongMinecraftExceptions.add(ret);