diff --git a/src/mpers.sh b/src/mpers.sh
index bb5685465..ae309caed 100755
--- a/src/mpers.sh
+++ b/src/mpers.sh
@@ -15,7 +15,7 @@ ARCH_FLAG=$1
 CC_ARCH_FLAG=$2
 PARSER_FILE=$3
 
-READELF="${READELF:-readelf}"
+READELF="readelf"
 CC="${CC-gcc}"
 CFLAGS="$CFLAGS -gdwarf-2 -c"
 CPP="${CPP-$CC -E}"