diff --git a/src/thingdef/thingdef_expression.cpp b/src/thingdef/thingdef_expression.cpp
index 2ebea2a468..ea5c5005e5 100644
--- a/src/thingdef/thingdef_expression.cpp
+++ b/src/thingdef/thingdef_expression.cpp
@@ -1742,7 +1742,7 @@ ExpEmit FxCompareEq::Emit(VMFunctionBuilder *build)
 	}
 	assert(!op1.Konst);
 
-	ExpEmit to(build, op1.RegType);
+	ExpEmit to(build, REGT_INT);
 
 	instr = op1.RegType == REGT_INT ? OP_EQ_R :
 			op1.RegType == REGT_FLOAT ? OP_EQF_R :