diff --git a/source/blender/blenlib/BLI_string.h b/source/blender/blenlib/BLI_string.h
index 770a4c0e3ab..c6f0bc49c9b 100644
--- a/source/blender/blenlib/BLI_string.h
+++ b/source/blender/blenlib/BLI_string.h
@@ -72,6 +72,13 @@ __attribute__((nonnull))
 #endif
 ;
 
+size_t BLI_strcpy_rlen(char *__restrict dst, const char *__restrict src)
+#ifdef __GNUC__
+__attribute__((warn_unused_result))
+__attribute__((nonnull))
+#endif
+;
+
 char *BLI_str_quoted_substrN(const char *__restrict str, const char *__restrict prefix)
 #ifdef __GNUC__
 __attribute__((warn_unused_result))
diff --git a/source/blender/blenlib/intern/string.c b/source/blender/blenlib/intern/string.c
index aba73936975..9d811aba503 100644
--- a/source/blender/blenlib/intern/string.c
+++ b/source/blender/blenlib/intern/string.c
@@ -139,6 +139,13 @@ size_t BLI_strncpy_rlen(char *__restrict dst, const char *__restrict src, const
 	return srclen;
 }
 
+size_t BLI_strcpy_rlen(char *__restrict dst, const char *__restrict src)
+{
+	size_t srclen = strlen(src);
+	memcpy(dst, src, srclen + 1);
+	return srclen;
+}
+
 /**
  * Portable replacement for #vsnprintf
  */
diff --git a/source/blender/editors/interface/interface.c b/source/blender/editors/interface/interface.c
index cb0784397ef..5a1ba8f31f0 100644
--- a/source/blender/editors/interface/interface.c
+++ b/source/blender/editors/interface/interface.c
@@ -2371,13 +2371,13 @@ void ui_check_but(uiBut *but)
 					char *str = but->drawstr;
 
 					if (but->modifier_key & KM_SHIFT)
-						str = strcat(str, "Shift ");
+						str += BLI_strcpy_rlen(str, "Shift ");
 					if (but->modifier_key & KM_CTRL)
-						str = strcat(str, "Ctrl ");
+						str += BLI_strcpy_rlen(str, "Ctrl ");
 					if (but->modifier_key & KM_ALT)
-						str = strcat(str, "Alt ");
+						str += BLI_strcpy_rlen(str, "Alt ");
 					if (but->modifier_key & KM_OSKEY)
-						str = strcat(str, "Cmd ");
+						str += BLI_strcpy_rlen(str, "Cmd ");
 
 					(void)str; /* UNUSED */
 				}