diff --git a/res/res_musiconhold.c b/res/res_musiconhold.c
index 95fe16ec2a..33f258dc0a 100644
--- a/res/res_musiconhold.c
+++ b/res/res_musiconhold.c
@@ -1219,9 +1219,9 @@ static int load_moh_classes(int reload)
 		}
 
 		/* Don't leak a class when it's already registered */
-		moh_register(class, reload);
-
-		numclasses++;
+		if (!moh_register(class, reload)) {
+			numclasses++;
+		}
 	}