diff --git a/reactos/tools/cdmake/cdmake.c b/reactos/tools/cdmake/cdmake.c
index 169cb3e1ce5..fb33cf04904 100644
--- a/reactos/tools/cdmake/cdmake.c
+++ b/reactos/tools/cdmake/cdmake.c
@@ -568,11 +568,11 @@ void parse_filename_into_dirrecord ( const char* filename, PDIR_RECORD d, BOOL d
       break;
     }
 
-    if ( (t-d->name_on_cd) < sizeof(d->name_on_cd)-1 )
+    if ( (size_t)(t-d->name_on_cd) < sizeof(d->name_on_cd)-1 )
       *t++ = check_for_punctuation(*s, filename);
     else if (!joliet)
     error_exit ("'%s' is not ISO-9660, aborting...", filename );
-    if ( (n-d->name) < sizeof(d->name)-1 )
+    if ( (size_t)(n-d->name) < sizeof(d->name)-1 )
       *n++ = *s;
     else if (!joliet)
       error_exit ( "'%s' is not ISO-9660, aborting...", filename );
@@ -587,7 +587,7 @@ void parse_filename_into_dirrecord ( const char* filename, PDIR_RECORD d, BOOL d
   t = d->extension_on_cd;
   while ( *s != 0 )
   {
-    if ( (t-d->extension_on_cd) < (sizeof(d->extension_on_cd)-1) )
+    if ( (size_t)(t-d->extension_on_cd) < sizeof(d->extension_on_cd)-1 )
       *t++ = check_for_punctuation(*s, filename);
     else if (!joliet)
       error_exit ( "'%s' is not ISO-9660, aborting...", filename );
diff --git a/reactos/tools/rgenstat/rgenstat.c b/reactos/tools/rgenstat/rgenstat.c
index 7b2393fea0d..189f3213ebb 100755
--- a/reactos/tools/rgenstat/rgenstat.c
+++ b/reactos/tools/rgenstat/rgenstat.c
@@ -59,7 +59,7 @@ static FILE *out;
 static FILE *file_handle = NULL;
 static char *file_buffer = NULL;
 static unsigned int file_size = 0;
-static int file_pointer = 0;
+static unsigned int file_pointer = 0;
 static char tagname[200];
 static PAPI_INFO api_info_list = NULL;
 
@@ -752,7 +752,7 @@ read_input_file(char *input_file)
   PAPI_INFO api_info;
   PAPI_INFO next_api_info;
   char *buffer;
-  int size;
+  unsigned int size;
   int len;
 
   in = fopen(input_file, "rb");