diff --git a/emulators/m64plus-fz.yml b/emulators/m64plus-fz.yml
index a58a793fb..4f30c3228 100644
--- a/emulators/m64plus-fz.yml
+++ b/emulators/m64plus-fz.yml
@@ -148,7 +148,7 @@ files:
     source_ref: "app/src/main/java/paulscode/android/mupen64plusae/jni/CoreService.java:599-612,621-623, app/src/main/java/paulscode/android/mupen64plusae/jni/CoreInterface.java:455-484, app/src/main/java/paulscode/android/mupen64plusae/persistent/GlobalPrefs.java:417,715, mupen64plus-core/upstream/src/main/main.c:1080-1145"
 
   - name: "64DD_IPL_US.n64"
-    aliases: ["64DD_IPL_USA.bin", "IPL_USA.n64"]
+    aliases: ["64DD_IPL_USA.bin"]
     system: nintendo-64dd
     required: true
     validation: [signature]
@@ -163,7 +163,7 @@ files:
     source_ref: "app/src/main/java/paulscode/android/mupen64plusae/util/RomHeader.java:180-212, app/src/main/java/paulscode/android/mupen64plusae/jni/CoreInterface.java:221,455-484, mupen64plus-core/upstream/src/main/main.c:1080-1145"
 
   - name: "64DD_IPL_DEV.n64"
-    aliases: ["64DD_IPL_DEV.bin", "IPL_DEV.n64"]
+    aliases: ["64DD_IPL_DEV.bin"]
     system: nintendo-64dd
     required: true
     validation: [signature]
diff --git a/emulators/mupen64plus-ae.yml b/emulators/mupen64plus-ae.yml
index 132c3405c..353763c22 100644
--- a/emulators/mupen64plus-ae.yml
+++ b/emulators/mupen64plus-ae.yml
@@ -148,7 +148,7 @@ files:
     source_ref: "app/src/main/java/paulscode/android/mupen64plusae/jni/CoreService.java:606-620,638-639, app/src/main/java/paulscode/android/mupen64plusae/jni/CoreInterface.java:459-488, app/src/main/java/paulscode/android/mupen64plusae/persistent/GlobalPrefs.java:421,727, mupen64plus-core/upstream/src/main/main.c:1080-1145"
 
   - name: "64DD_IPL_US.n64"
-    aliases: ["64DD_IPL_USA.bin", "IPL_USA.n64"]
+    aliases: ["64DD_IPL_USA.bin"]
     system: nintendo-64dd
     required: true
     validation: [signature]
@@ -163,7 +163,7 @@ files:
     source_ref: "app/src/main/java/paulscode/android/mupen64plusae/util/RomHeader.java:180-220, app/src/main/java/paulscode/android/mupen64plusae/jni/CoreInterface.java:223,459-488, mupen64plus-core/upstream/src/main/main.c:1080-1145"
 
   - name: "64DD_IPL_DEV.n64"
-    aliases: ["64DD_IPL_DEV.bin", "IPL_DEV.n64"]
+    aliases: ["64DD_IPL_DEV.bin"]
     system: nintendo-64dd
     required: true
     validation: [signature]
diff --git a/emulators/mupen64plus.yml b/emulators/mupen64plus.yml
index 280ae6ec6..acd898a8b 100644
--- a/emulators/mupen64plus.yml
+++ b/emulators/mupen64plus.yml
@@ -89,7 +89,7 @@ files:
     source_ref: "src/main.c:321, src/main.c:729-732, src/main.c:874-877, upstream src/main/main.c:1183-1248"
 
   - name: "64DD_IPL_US.n64"
-    aliases: ["64DD_IPL_USA.bin", "IPL_USA.n64"]
+    aliases: ["64DD_IPL_USA.bin"]
     system: nintendo-64dd
     required: true
     unread_on: [amberelec]
@@ -98,7 +98,7 @@ files:
     source_ref: "src/main.c:874-892, upstream src/main/main.c:1183-1248"
 
   - name: "64DD_IPL_DEV.n64"
-    aliases: ["64DD_IPL_DEV.bin", "IPL_DEV.n64"]
+    aliases: ["64DD_IPL_DEV.bin"]
     system: nintendo-64dd
     required: true
     unread_on: [amberelec]
diff --git a/tests/test_launcher_aliases.py b/tests/test_launcher_aliases.py
index bd4d5331d..fb0ba7b92 100644
--- a/tests/test_launcher_aliases.py
+++ b/tests/test_launcher_aliases.py
@@ -119,6 +119,18 @@ class ProfileAliasesAreCodeNames(unittest.TestCase):
             "code, stated in the entry's note with its source_ref, or removed",
         )
 
+    def test_rosalies_mupen_gui_names_stay_out_of_mupen64plus(self) -> None:
+        """RetroBat's mupen64 generator configures Rosalie's Mupen GUI and
+        writes IPL_USA.n64 and IPL_DEV.n64 into its config
+        (Mupen64.Generator.cs:232-238). Mupen64Plus fixes no IPL name."""
+        profiles = _profiles()
+        for key in ("mupen64plus", "mupen64plus-ae", "m64plus-fz"):
+            aliases = {
+                str(a) for entry in profiles[key].get("files") or []
+                for a in entry.get("aliases") or []
+            }
+            self.assertFalse(aliases & {"IPL_USA.n64", "IPL_DEV.n64"}, key)
+
     def test_check_catches_a_launcher_name(self) -> None:
         self.assertFalse(_named_without_platform(
             "cerbios.bin", "Batocera writes bios/cerbios.bin into flashrom_path.",