diff --git a/include/polarssl/bn_mul.h b/include/polarssl/bn_mul.h
index 87b2052..e33c633 100644
--- a/include/polarssl/bn_mul.h
+++ b/include/polarssl/bn_mul.h
@@ -693,8 +693,8 @@
 
 #define MULADDC_INIT                    \
 {                                       \
-    t_dbl r;                            \
-    t_int r0, r1;
+    t_udbl r;                           \
+    t_uint r0, r1;
 
 #define MULADDC_CORE                    \
     r   = *(s++) * (t_dbl) b;           \
@@ -710,8 +710,8 @@
 #else
 #define MULADDC_INIT                    \
 {                                       \
-    t_int s0, s1, b0, b1;               \
-    t_int r0, r1, rx, ry;               \
+    t_uint s0, s1, b0, b1;              \
+    t_uint r0, r1, rx, ry;              \
     b0 = ( b << biH ) >> biH;           \
     b1 = ( b >> biH );