diff --git a/libretro-common/glsm/glsm.c b/libretro-common/glsm/glsm.c
index 4ad065290c..7e36c4c8c7 100644
--- a/libretro-common/glsm/glsm.c
+++ b/libretro-common/glsm/glsm.c
@@ -581,7 +581,7 @@ void rglGetProgramInfoLog(GLuint shader, GLsizei maxLength,
 
 GLboolean rglIsProgram(GLuint program)
 {
-   glIsProgram(program);
+   return glIsProgram(program);
 }
 
 void rglEnableVertexAttribArray(GLuint index)