diff --git a/scripts/conmakehash.c b/scripts/conmakehash.c
index 93dd23f2..e0c6891 100644
--- a/scripts/conmakehash.c
+++ b/scripts/conmakehash.c
@@ -33,7 +33,7 @@
 
 int getunicode(char **p0)
 {
-  unsigned char *p = *p0;
+  char *p = *p0;
 
   while (*p == ' ' || *p == '\t')
     p++;
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index d3d2e53..9be41a9f 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -207,9 +207,9 @@
 		 * move then they may get dropped in pass 2, which breaks the
 		 * kallsyms rules.
 		 */
-		if ((s->addr == _etext && strcmp(s->sym + offset, "_etext")) ||
-		    (s->addr == _einittext && strcmp(s->sym + offset, "_einittext")) ||
-		    (s->addr == _eextratext && strcmp(s->sym + offset, "_eextratext")))
+		if ((s->addr == _etext && strcmp((char*)s->sym + offset, "_etext")) ||
+		    (s->addr == _einittext && strcmp((char*)s->sym + offset, "_einittext")) ||
+		    (s->addr == _eextratext && strcmp((char*)s->sym + offset, "_eextratext")))
 			return 0;
 	}
 
diff --git a/scripts/mod/sumversion.c b/scripts/mod/sumversion.c
index 1112347..43271a1 100644
--- a/scripts/mod/sumversion.c
+++ b/scripts/mod/sumversion.c
@@ -252,9 +252,9 @@
 }
 
 /* FIXME: Handle .s files differently (eg. # starts comments) --RR */
-static int parse_file(const signed char *fname, struct md4_ctx *md)
+static int parse_file(const char *fname, struct md4_ctx *md)
 {
-	signed char *file;
+	char *file;
 	unsigned long i, len;
 
 	file = grab_file(fname, &len);
@@ -332,7 +332,7 @@
 	   Sum all files in the same dir or subdirs.
 	*/
 	while ((line = get_next_line(&pos, file, flen)) != NULL) {
-		signed char* p = line;
+		char* p = line;
 		if (strncmp(line, "deps_", sizeof("deps_")-1) == 0) {
 			check_files = 1;
 			continue;
@@ -458,7 +458,7 @@
 	close(fd);
 }
 
-static int strip_rcs_crap(signed char *version)
+static int strip_rcs_crap(char *version)
 {
 	unsigned int len, full_len;