diff --git a/reactos/lib/unicode/cptable.c b/reactos/lib/unicode/cptable.c
index cf94fafe499..d68386a7764 100644
--- a/reactos/lib/unicode/cptable.c
+++ b/reactos/lib/unicode/cptable.c
@@ -154,7 +154,7 @@ static const union cptable * const cptables[59] =
 
 static int cmp_codepage( const void *codepage, const void *entry )
 {
-    return (unsigned int)codepage - (*(union cptable **)entry)->info.codepage;
+    return (unsigned int)codepage - (*(const union cptable **)entry)->info.codepage;
 }
 
 
diff --git a/reactos/lib/unicode/wctomb.c b/reactos/lib/unicode/wctomb.c
index 5f9874018ba..68be134e7ae 100644
--- a/reactos/lib/unicode/wctomb.c
+++ b/reactos/lib/unicode/wctomb.c
@@ -142,7 +142,7 @@ static inline int wcstombs_sbcs( const struct sbcs_table *table,
         ret = -1;
     }
 
-    if (dst <= (char *)src && dst + 16 > (char *)src)
+    if (dst <= (const char *)src && dst + 16 > (const char *)src)
     {
         /* overlapping buffers, do it char by char */
         while (srclen--)