diff --git a/test/afl/compile/fcns b/test/afl/compile/fcns
index ab8e112c..ee03ebe9 100644
--- a/test/afl/compile/fcns
+++ b/test/afl/compile/fcns
@@ -1,5 +1,5 @@
 
-AFL_CC=afl-gcc
+AFL_CC=afl-clang-fast
 
 set_afl_cc() {
     $AFL_CC /dev/null 2>&1 | grep -q -i "On Apple systems.*wrapper for clang"
diff --git a/test/afl/fuzzing-wrappers/fcns b/test/afl/fuzzing-wrappers/fcns
index 5844cbe1..391ee350 100755
--- a/test/afl/fuzzing-wrappers/fcns
+++ b/test/afl/fuzzing-wrappers/fcns
@@ -5,7 +5,7 @@ SERVER="../../server/.libs/fwknopd"
 CLIENT="../../client/.libs/fwknop"
 LIB_DIR="../../lib/.libs"
 
-MEM_LIMIT=800
+MEM_LIMIT=none
 TIMEOUT=1000
 
 fw_type() {