diff --git a/tcg/s390/tcg-target.c b/tcg/s390/tcg-target.c
index 8e660b3..7d6f777 100644
--- a/tcg/s390/tcg-target.c
+++ b/tcg/s390/tcg-target.c
@@ -1231,7 +1231,7 @@
     int cc;
 
     if (facilities & FACILITY_GEN_INST_EXT) {
-        bool is_unsigned = (c > TCG_COND_GT);
+        bool is_unsigned = is_unsigned_cond(c);
         bool in_range;
         S390Opcode opc;