diff --git a/src/config/options.c b/src/config/options.c
index 080ead3f..175d09ac 100644
--- a/src/config/options.c
+++ b/src/config/options.c
@@ -181,7 +181,7 @@ get_opt_rec(struct option *tree, const unsigned char *name_)
 
 	/* We iteratively call get_opt_rec() each for path_elements-1, getting
 	 * appropriate tree for it and then resolving [path_elements]. */
-	if ((sep = strrchr(name, '.'))) {
+	if ((sep = strrchr((const char *)name, '.'))) {
 		*sep = '\0';
 
 		tree = get_opt_rec(tree, name);
diff --git a/src/cookies/cookies.c b/src/cookies/cookies.c
index 48ced773..19d6cf35 100644
--- a/src/cookies/cookies.c
+++ b/src/cookies/cookies.c
@@ -372,7 +372,7 @@ set_cookie(struct uri *uri, unsigned char *str)
 		if (!path)
 			return;
 
-		path_end = strrchr(path, '/');
+		path_end = strrchr((const char *)path, '/');
 		if (path_end)
 			path_end[1] = '\0';
 		break;
diff --git a/src/document/html/parser/link.c b/src/document/html/parser/link.c
index 4c14a4c1..7508c95e 100644
--- a/src/document/html/parser/link.c
+++ b/src/document/html/parser/link.c
@@ -539,7 +539,7 @@ html_embed(struct html_context *html_context, unsigned char *a,
 
 	/* If there is no extension we want to get the default mime/type
 	 * anyway? */
-	extension = strrchr(object_src, '.');
+	extension = strrchr((const char *)object_src, '.');
 	if (!extension) extension = object_src;
 
 	type = get_extension_content_type(extension);
diff --git a/src/ecmascript/ecmascript.c b/src/ecmascript/ecmascript.c
index e493b6f4..5b48abb2 100644
--- a/src/ecmascript/ecmascript.c
+++ b/src/ecmascript/ecmascript.c
@@ -283,7 +283,7 @@ ecmascript_set_action(unsigned char **action, unsigned char *string)
 			done_uri(uri);
 			mem_free(string);
 		} else { /* relative uri */
-			unsigned char *last_slash = strrchr(*action, '/');
+			unsigned char *last_slash = strrchr((const char *)*action, '/');
 			unsigned char *new_action;
 
 			if (last_slash) *(last_slash + 1) = '\0';
diff --git a/src/intl/gettext/loadmsgcat.c b/src/intl/gettext/loadmsgcat.c
index 82f6f2fb..3ad37cff 100644
--- a/src/intl/gettext/loadmsgcat.c
+++ b/src/intl/gettext/loadmsgcat.c
@@ -216,7 +216,7 @@ _nl_free_domain_conv(struct loaded_domain *domain)
 static struct string *
 add_filename_to_string(struct string *str, struct loaded_l10nfile *domain_file)
 {
-	unsigned char *slash = strrchr(program.path, '/');
+	unsigned char *slash = strrchr((const char *)program.path, '/');
 	size_t dirnamelen = (slash ? slash - program.path + 1 : 0);
 
 	/* Check if elinks is being run from the source tree. */
diff --git a/src/main/version.c b/src/main/version.c
index 8ef7ca8b..79fe6c52 100644
--- a/src/main/version.c
+++ b/src/main/version.c
@@ -154,7 +154,7 @@ get_dyn_full_version(struct terminal *term, int more)
 
 	if (!more) {
 		int start_at = 0;
-		unsigned char *last_newline = strrchr(string.source, '\n');
+		unsigned char *last_newline = strrchr((const char *)string.source, '\n');
 
 		if (last_newline) {
 			start_at = last_newline - string.source + 1;
diff --git a/src/mime/mime.c b/src/mime/mime.c
index f808ba86..a429cf04 100644
--- a/src/mime/mime.c
+++ b/src/mime/mime.c
@@ -104,7 +104,7 @@ static inline unsigned char *
 check_extension_type(unsigned char *extension)
 {
 	/* Trim the extension so only last .<extension> is used. */
-	unsigned char *trimmed = strrchr(extension, '.');
+	unsigned char *trimmed = strrchr((const char *)extension, '.');
 	struct mime_handler *handler;
 	unsigned char *content_type;
 
@@ -133,7 +133,7 @@ check_encoding_type(unsigned char *extension)
 {
 	enum stream_encoding encoding = guess_encoding(extension);
 	const unsigned char *const *extension_list;
-	unsigned char *last_extension = strrchr(extension, '.');
+	unsigned char *last_extension = strrchr((const char *)extension, '.');
 
 	if (encoding == ENCODING_NONE || !last_extension)
 		return NULL;
diff --git a/src/osdep/win32/overrides.c b/src/osdep/win32/overrides.c
index be04991d..803a2654 100644
--- a/src/osdep/win32/overrides.c
+++ b/src/osdep/win32/overrides.c
@@ -906,9 +906,9 @@ win32_strerror(int err)
 	}
 
 	/* strip trailing '\r\n' or '\n'. */
-	if ((p = strrchr(buf,'\n')) != NULL && (p - buf) >= 2)
+	if ((p = strrchr((const char *)buf,'\n')) != NULL && (p - buf) >= 2)
 		*p = '\0';
-	if ((p = strrchr(buf,'\r')) != NULL && (p - buf) >= 1)
+	if ((p = strrchr((const char *)buf,'\r')) != NULL && (p - buf) >= 1)
 		*p = '\0';
 
 	return buf;
diff --git a/src/protocol/file/cgi.c b/src/protocol/file/cgi.c
index da30d6b5..29d69c5b 100644
--- a/src/protocol/file/cgi.c
+++ b/src/protocol/file/cgi.c
@@ -328,7 +328,7 @@ execute_cgi(struct connection *conn)
 		return 1;
 	}
 
-	last_slash = strrchr(script, '/');
+	last_slash = strrchr((const char *)script, '/');
 	if (last_slash++) {
 		unsigned char storage;
 		int res;
diff --git a/src/viewer/text/form.c b/src/viewer/text/form.c
index c57ae113..92ef20ea 100644
--- a/src/viewer/text/form.c
+++ b/src/viewer/text/form.c
@@ -1009,7 +1009,7 @@ encode_multipart(struct session *ses, LIST_OF(struct submitted_value) *l,
 			add_char_to_string(data, '"');
 
 			/* Add a Content-Type header if the type is configured */
-			extension = strrchr(sv->value, '.');
+			extension = strrchr((const char *)sv->value, '.');
 			if (extension) {
 				unsigned char *type = get_extension_content_type(extension);