diff --git a/src/compiler.cpp b/src/compiler.cpp
index e892c7279f..64da22e5aa 100644
--- a/src/compiler.cpp
+++ b/src/compiler.cpp
@@ -1122,7 +1122,7 @@ RegisterOperand::apply(Context* c, Operation operation)
     break;
 
   case push:
-    if (selection == DefaultSelection) {
+    if (selection == DefaultSelection or selection == S4Selection) {
       c->code.append(0x50 | value(c));
     } else {
       switch (selection) {