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-rw-r--r--src/newgrf_text.cpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/newgrf_text.cpp b/src/newgrf_text.cpp
index 74b024ca9..c086bae9a 100644
--- a/src/newgrf_text.cpp
+++ b/src/newgrf_text.cpp
@@ -371,7 +371,9 @@ struct UnmappedChoiceList : ZeroedMemoryAllocator {
for (int i = 0; i < count; i++) {
int idx = (this->type == SCC_GENDER_LIST ? lm->GetReverseMapping(i, true) : i + 1);
const char *str = this->strings[this->strings.Contains(idx) ? idx : 0];
- size_t len = strlen(str);
+ /* Limit the length of the string we copy to 0xFE. The length is written above
+ * as a byte and we need room for the final '\0'. */
+ size_t len = min(0xFE, strlen(str));
memcpy(d, str, len);
d += len;
*d++ = '\0';