diff --git a/tools/qfcc/include/rua-lang.h b/tools/qfcc/include/rua-lang.h
index dc2f5a7e0..04f6b6e81 100644
--- a/tools/qfcc/include/rua-lang.h
+++ b/tools/qfcc/include/rua-lang.h
@@ -197,6 +197,7 @@ const char *rua_keyword_get_key (const void *dir, void *unused) __attribute__((p
 
 typedef struct language_s {
 	bool        initialized;
+	bool        always_override;
 	void      (*init) (void);
 	int       (*parse) (FILE *in);
 	int       (*finish) (const char *file);
diff --git a/tools/qfcc/source/function.c b/tools/qfcc/source/function.c
index 77c6cfa73..4fbb56885 100644
--- a/tools/qfcc/source/function.c
+++ b/tools/qfcc/source/function.c
@@ -540,7 +540,7 @@ get_function (const char *name, const type_t *type, specifier_t spec)
 		return nullptr;
 	}
 
-	bool overload = spec.is_overload;
+	bool overload = spec.is_overload | current_language.always_override;
 	const char *full_name;
 
 	full_name = save_string (va (0, "%s|%s", name, encode_params (type)));
diff --git a/tools/qfcc/source/glsl-parse.y b/tools/qfcc/source/glsl-parse.y
index e493b0831..7e0bfc284 100644
--- a/tools/qfcc/source/glsl-parse.y
+++ b/tools/qfcc/source/glsl-parse.y
@@ -1811,6 +1811,7 @@ glsl_version (int version, const char *profile)
 }
 
 language_t lang_glsl_comp = {
+	.always_override = true,
 	.init = glsl_init_comp,
 	.parse = glsl_yyparse,
 	.extension = glsl_extension,
@@ -1821,6 +1822,7 @@ language_t lang_glsl_comp = {
 };
 
 language_t lang_glsl_vert = {
+	.always_override = true,
 	.init = glsl_init_vert,
 	.parse = glsl_yyparse,
 	.extension = glsl_extension,
@@ -1831,6 +1833,7 @@ language_t lang_glsl_vert = {
 };
 
 language_t lang_glsl_tesc = {
+	.always_override = true,
 	.init = glsl_init_tesc,
 	.parse = glsl_yyparse,
 	.extension = glsl_extension,
@@ -1841,6 +1844,7 @@ language_t lang_glsl_tesc = {
 };
 
 language_t lang_glsl_tese = {
+	.always_override = true,
 	.init = glsl_init_tese,
 	.parse = glsl_yyparse,
 	.extension = glsl_extension,
@@ -1851,6 +1855,7 @@ language_t lang_glsl_tese = {
 };
 
 language_t lang_glsl_geom = {
+	.always_override = true,
 	.init = glsl_init_geom,
 	.parse = glsl_yyparse,
 	.extension = glsl_extension,
@@ -1861,6 +1866,7 @@ language_t lang_glsl_geom = {
 };
 
 language_t lang_glsl_frag = {
+	.always_override = true,
 	.init = glsl_init_frag,
 	.parse = glsl_yyparse,
 	.extension = glsl_extension,