diff --git a/pkgs/applications/emulators/libretro/cores/scummvm.nix b/pkgs/applications/emulators/libretro/cores/scummvm.nix
index acd4315d0ed5..fe52e890a40b 100644
--- a/pkgs/applications/emulators/libretro/cores/scummvm.nix
+++ b/pkgs/applications/emulators/libretro/cores/scummvm.nix
@@ -50,6 +50,9 @@ mkLibretroCore {
     cp -a ${libretro-deps-src}/* deps/libretro-deps
     chmod -R u+w deps/
 
+    # Fix conflicts with glibc index/rindex functions
+    sed -i 's/\bindex\b/faad_index/g; s/\brindex\b/faad_rindex/g' deps/libretro-deps/libfaad/libfaad/common.h
+
     patchShebangs ./scripts/*
   '';