diff --git a/src/cairo-misc.c b/src/cairo-misc.c
index 81f9325ca..d7af82147 100644
--- a/src/cairo-misc.c
+++ b/src/cairo-misc.c
@@ -404,10 +404,9 @@ _cairo_operator_bounded_by_mask (cairo_operator_t op)
     case CAIRO_OPERATOR_DEST_IN:
     case CAIRO_OPERATOR_DEST_ATOP:
 	return FALSE;
+    default:
+	ASSERT_NOT_REACHED;
     }
-
-    ASSERT_NOT_REACHED;
-    return FALSE;
 }
 
 /**
@@ -459,18 +458,15 @@ _cairo_operator_bounded_by_source (cairo_operator_t op)
     case CAIRO_OPERATOR_DEST_IN:
     case CAIRO_OPERATOR_DEST_ATOP:
 	return FALSE;
+    default:
+	ASSERT_NOT_REACHED;
     }
-
-    ASSERT_NOT_REACHED;
-    return FALSE;
 }
 
 uint32_t
 _cairo_operator_bounded_by_either (cairo_operator_t op)
 {
     switch (op) {
-    default:
-	ASSERT_NOT_REACHED;
     case CAIRO_OPERATOR_OVER:
     case CAIRO_OPERATOR_ATOP:
     case CAIRO_OPERATOR_DEST:
@@ -503,6 +499,8 @@ _cairo_operator_bounded_by_either (cairo_operator_t op)
     case CAIRO_OPERATOR_DEST_IN:
     case CAIRO_OPERATOR_DEST_ATOP:
 	return 0;
+    default:
+	ASSERT_NOT_REACHED;
     }
 
 }