diff --git a/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperMod.java b/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperMod.java
index 8149333..11bd375 100644
--- a/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperMod.java
+++ b/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperMod.java
@@ -30,6 +30,7 @@ public interface LaunchWrapperMod {
 	 * Returns an Injection which should dynamically create mappings, starting from an unobfuscated entry point
 	 * or you can return MappingSource.fromMappings(mappings) with predetermined mappings
 	 * This method must return an instance of MappingSource with all class/method/field mappings used by mixins from getMixins()
+	 * This instance should also be the first Injection in a list returned by {@link #getInjections()}
 	 * @return Instance of MappingsSource
 	 */
 	@Nullable
diff --git a/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperModFile.java b/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperModFile.java
index 44af7f9..e811ac9 100644
--- a/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperModFile.java
+++ b/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/LaunchWrapperModFile.java
@@ -145,6 +145,7 @@ public LaunchWrapperModFile(File modLocation) throws IOException, InvalidMixinCo
 					e.printStackTrace();
 				}
 			}
+			injections.add(0, mappingSource);
 		}
 	}
 
diff --git a/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/tweak/MicroMixinTweak.java b/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/tweak/MicroMixinTweak.java
index 05338d8..66232c0 100644
--- a/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/tweak/MicroMixinTweak.java
+++ b/launchwrapper-micromixin/src/main/java/org/mcphackers/launchwrapper/micromixin/tweak/MicroMixinTweak.java
@@ -12,7 +12,6 @@
 import org.mcphackers.launchwrapper.loader.LaunchClassLoader;
 import org.mcphackers.launchwrapper.micromixin.LaunchWrapperMod;
 import org.mcphackers.launchwrapper.micromixin.LaunchWrapperModFile;
-import org.mcphackers.launchwrapper.micromixin.MappingSource;
 import org.mcphackers.launchwrapper.micromixin.tweak.injection.micromixin.MicroMixinInjection;
 import org.mcphackers.launchwrapper.micromixin.tweak.injection.micromixin.PackageAccessFixer;
 import org.mcphackers.launchwrapper.target.LaunchTarget;
@@ -42,21 +41,19 @@ public MicroMixinTweak(LaunchConfig launch, Tweak tweak) {
 	public void prepare(LaunchClassLoader loader) {
 		File modDir = new File(config.gameDir.get(), "mods");
 		List<File> modFiles = new ArrayList<>();
-		URL url = loader.getResource("launchwrapper.mod.json");
-		if (url != null) {
-			// TODO get all mods if multiple are on classpath
-			File f = Util.getSource(url, "launchwrapper.mod.json");
-			modFiles.add(f); // Classpath mod has the highest priority
-		}
+		// Classpath mods have the highest priority
+		modFiles.addAll(Util.getSource(loader, "launchwrapper.mod.json"));
 		if (modDir.isDirectory()) {
 			List<File> modList = Arrays.asList(modDir.listFiles());
 			modList.sort(Comparator.naturalOrder());
-			modFiles.addAll(modList);
+			for (File f : modList) {
+				if (!f.getName().endsWith(".jar")) {
+					continue;
+				}
+				modFiles.add(f);
+			}
 		}
 		for (File f : modFiles) {
-			if (!f.getName().endsWith(".jar")) {
-				continue;
-			}
 			try {
 				LaunchWrapperMod mod = new LaunchWrapperModFile(f);
 				mods.add(mod);
@@ -86,10 +83,6 @@ public List<Injection> getInjections() {
 		List<LaunchWrapperMod> mods = getMixins();
 		List<Injection> injects = new ArrayList<Injection>();
 		for (LaunchWrapperMod mod : mods) {
-			MappingSource mappingSource = mod.getMappingSource();
-			if (mappingSource != null) {
-				injects.add(mappingSource);
-			}
 			injects.addAll(mod.getInjections());
 		}
 		injects.addAll(baseTweak.getInjections());