diff --git a/libs/wpp/ppy.y b/libs/wpp/ppy.y
index 5a634942781..5f1566e4e24 100644
--- a/libs/wpp/ppy.y
+++ b/libs/wpp/ppy.y
@@ -61,7 +61,7 @@
 	else if(cv_signed(v1) && !cv_signed(v2))	\
 		r.val.si = v1.val.si OP v2.val.ui;	\
 	else if(!cv_signed(v1) && cv_signed(v2))	\
-		r.val.ui = v1.val.ui OP v2.val.si;	\
+		r.val.si = v1.val.ui OP v2.val.si;	\
 	else						\
 		r.val.ui = v1.val.ui OP v2.val.ui;
 
@@ -72,7 +72,7 @@
 	else if(cv_signed(v1) && !cv_signed(v2))	\
 		r.val.sl = v1.val.sl OP v2.val.ul;	\
 	else if(!cv_signed(v1) && cv_signed(v2))	\
-		r.val.ul = v1.val.ul OP v2.val.sl;	\
+		r.val.sl = v1.val.ul OP v2.val.sl;	\
 	else						\
 		r.val.ul = v1.val.ul OP v2.val.ul;
 
@@ -83,7 +83,7 @@
 	else if(cv_signed(v1) && !cv_signed(v2))	\
 		r.val.sll = v1.val.sll OP v2.val.ull;	\
 	else if(!cv_signed(v1) && cv_signed(v2))	\
-		r.val.ull = v1.val.ull OP v2.val.sll;	\
+		r.val.sll = v1.val.ull OP v2.val.sll;	\
 	else						\
 		r.val.ull = v1.val.ull OP v2.val.ull;