diff --git a/tools/taxonomy/TB/main.c b/tools/taxonomy/TB/main.c
index 8a62e3938c3..081e174f3ba 100644
--- a/tools/taxonomy/TB/main.c
+++ b/tools/taxonomy/TB/main.c
@@ -781,7 +781,6 @@ int main (int argc, const char * argv[])
 		currentChar = fgetc(queryFile);
 	}
 
-	fclose (structFile);
 	fclose (queryFile);
 	fclose (outFile);
 	return 0;