diff --git a/src/sfloader/fluid_ramsfont.c b/src/sfloader/fluid_ramsfont.c
index fa83520b..41148121 100644
--- a/src/sfloader/fluid_ramsfont.c
+++ b/src/sfloader/fluid_ramsfont.c
@@ -150,6 +150,7 @@ void fluid_rampreset_preset_delete(fluid_preset_t* preset)
 {
   fluid_ramsfont_t* ramsfont;
   fluid_rampreset_t* rampreset;
+  fluid_return_if_fail(preset != NULL);
 
   ramsfont = fluid_sfont_get_data(preset->sfont);
   rampreset = fluid_preset_get_data(preset);