diff --git a/src/libmdb/sargs.c b/src/libmdb/sargs.c
index 99e1600..1325852 100644
--- a/src/libmdb/sargs.c
+++ b/src/libmdb/sargs.c
@@ -175,13 +175,10 @@ mdb_test_sarg(MdbHandle *mdb, MdbColumn *col, MdbSargNode *node, MdbField *field
 {
 	char tmpbuf[256];
 
-	if (node->op == MDB_ISNULL) {
-		if (field->is_null) return 0;
-		else return 1;
-	} else if (node->op == MDB_NOTNULL) {
-		if (field->is_null) return 1;
-		else return 0;
-	}
+	if (node->op == MDB_ISNULL)
+		return field->is_null?1:0;
+	else if (node->op == MDB_NOTNULL)
+		return field->is_null?0:1;
 	switch (col->col_type) {
 		case MDB_BOOL:
 			return mdb_test_int(node, !field->is_null);