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-rw-r--r--src/newgrf_config.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/newgrf_config.cpp b/src/newgrf_config.cpp
index 1a363b5ef..0db3c67aa 100644
--- a/src/newgrf_config.cpp
+++ b/src/newgrf_config.cpp
@@ -359,7 +359,7 @@ static uint ScanPath(const char *path, int basepath_length)
bool FioTarFileListScanNewGRFCallback(const char *filename, int size, void *userdata)
{
uint *num = (uint *)userdata;
- char *ext = strrchr(filename, '.');
+ const char *ext = strrchr(filename, '.');
/* If no extension or extension isn't .grf, skip the file */
if (ext == NULL) return false;