diff --git a/kernel/zarch/cscal.c b/kernel/zarch/cscal.c
index cec7b3fb3..30c8acedf 100644
--- a/kernel/zarch/cscal.c
+++ b/kernel/zarch/cscal.c
@@ -308,7 +308,7 @@ int CNAME(BLASLONG n, BLASLONG dummy0, BLASLONG dummy1, FLOAT da_r, FLOAT da_i,
 
     } else {
 
-      if (da_i == 0.0) {
+      if (da_i == 0.0 && dummy2) {
         BLASLONG n1 = n & -2;
 
         while (j < n1) {