diff --git a/src/util/src/tcompression.c b/src/util/src/tcompression.c
index 1a5d28625f7061a4eec1ca41e654c2683c3ba9d5..88ad0d8b9508f64187a02161bf04af27d48aaee9 100644
--- a/src/util/src/tcompression.c
+++ b/src/util/src/tcompression.c
@@ -308,7 +308,7 @@ int tsCompressBoolImp(const char *const input, const int nelements, char *const
       /* t = (~((( uint8_t)1) << (7-i%BITS_PER_BYTE))); */
       output[pos] |= t;
     } else {
-      uError("Invalid compress bool value:%d", output[pos]);
+      uError("Invalid compress bool value:%d", input[i]);
       return -1;
     }
   }