diff --git a/sc2/build/unix/build.config b/sc2/build/unix/build.config
index 84c35983a..d75769746 100644
--- a/sc2/build/unix/build.config
+++ b/sc2/build/unix/build.config
@@ -184,12 +184,16 @@ uqm_prepare_config()
 	CHOICE_mikmod_OPTIONS="internal external"
 	CHOICE_mikmod_TITLE="Tracker music support"
 	CHOICE_mikmod_OPTION_internal_TITLE="Included libmikmod"
+	CHOICE_mikmod_OPTION_internal_ACTION=mikmod_internal_action
+	mikmod_internal_action() {
+		CFLAGS="$CFLAGS -DUSE_INTERNAL_MIKMOD"
+		USE_INTERNAL_MIKMOD=1
+	}
 	CHOICE_mikmod_OPTION_external_TITLE="System libmikmod"
 	CHOICE_mikmod_OPTION_external_PRECOND="have_library libmikmod"
 	CHOICE_mikmod_OPTION_external_ACTION=mikmod_external_action
 	mikmod_external_action() {
-		CFLAGS="$CFLAGS -DUSE_INTERNAL_MIKMOD"
-		USE_INTERNAL_MIKMOD=1
+		USE_INTERNAL_MIKMOD=""
 		use_library libmikmod
 	}
 	CHOICE_mikmod_DEFAULT=external