diff --git a/CHANGES b/CHANGES
index b6a5b67ff..d8a31f1cf 100644
--- a/CHANGES
+++ b/CHANGES
@@ -62,6 +62,7 @@ Misc:
  - Qt: Remove default autofire mappings
  - PSP2: Allow UTF-8 filenames
  - Util: Add Vector GetConstPointer
+ - Util: Add rtrim
 
 0.4.1: (2016-07-11)
 Bugfixes:
diff --git a/src/util/string.c b/src/util/string.c
index 438a1b683..6d7795f77 100644
--- a/src/util/string.c
+++ b/src/util/string.c
@@ -340,3 +340,14 @@ const char* hex4(const char* line, uint8_t* out) {
 	*out = value;
 	return line;
 }
+
+void rtrim(char* string) {
+	if (!*string) {
+		return;
+	}
+	char* end = string + strlen(string) - 1;
+	while (isspace((int) *end) && end >= string) {
+		*end = '\0';
+		--end;
+	}
+}
diff --git a/src/util/string.h b/src/util/string.h
index 44ee79a35..5c4f8bb43 100644
--- a/src/util/string.h
+++ b/src/util/string.h
@@ -33,4 +33,6 @@ const char* hex12(const char* line, uint16_t* out);
 const char* hex8(const char* line, uint8_t* out);
 const char* hex4(const char* line, uint8_t* out);
 
+void rtrim(char* string);
+
 #endif