diff --git a/src/string.cpp b/src/string.cpp
index b5957622e7..aea4bad9da 100644
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -282,7 +282,8 @@ size_t Utf8TrimString(char *s, size_t maxlen)
 
 	for (const char *ptr = strchr(s, '\0'); *s != '\0';) {
 		size_t len = Utf8EncodedCharLen(*s);
-		if (len == 0) break; // invalid encoding
+		/* Silently ignore invalid UTF8 sequences, our only concern trimming */
+		if (len == 0) len = 1;
 
 		/* Take care when a hard cutoff was made for the string and
 		 * the last UTF8 sequence is invalid */