diff --git a/contrib/randomDictBuilder/io.c b/contrib/randomDictBuilder/io.c
index 1c3eda58..67c40858 100644
--- a/contrib/randomDictBuilder/io.c
+++ b/contrib/randomDictBuilder/io.c
@@ -244,6 +244,7 @@ sampleInfo* getSampleInfo(const char** fileNamesTable, unsigned nbFiles, size_t
 
 
 void freeSampleInfo(sampleInfo *info) {
+    if (!info) return;
     if (info->samplesSizes) free((void*)(info->samplesSizes));
     if (info->srcBuffer) free((void*)(info->srcBuffer));
     free(info);