diff --git a/scripts/afl-persistent-config b/scripts/afl-persistent-config
index a6b05e0759..5a9f5e31f8 100755
--- a/scripts/afl-persistent-config
+++ b/scripts/afl-persistent-config
@@ -68,10 +68,10 @@ if [[ "$PLATFORM" = "Darwin" ]] ; then
     <array>
       <string>/usr/sbin/sysctl</string>
       <string>-w</string>
-      <string>kern.sysv.shmmax=268435456</string>
+      <string>kern.sysv.shmmax=524288000</string>
       <string>kern.sysv.shmmni=128</string>
       <string>kern.sysv.shmseg=32</string>
-      <string>kern.sysv.shmall=65536</string>
+      <string>kern.sysv.shmall=131072000</string>
     </array>
     <key>KeepAlive</key>
     <false/>
diff --git a/scripts/shmem_limits_macos.sh b/scripts/shmem_limits_macos.sh
index eed4c9bfe3..70cf8f46d8 100755
--- a/scripts/shmem_limits_macos.sh
+++ b/scripts/shmem_limits_macos.sh
@@ -1,10 +1,10 @@
 #!/bin/sh
 
-echo "Warning: this script is not a proper fix to do LLMP fuzzing. " \
+echo "Warning: this script is not a proper fix to do LLMP fuzzing." \
      "Instead, run `afl-persistent-config` with SIP disabled."
 
-sudo sysctl -w kern.sysv.shmmax=268435456
+sudo sysctl -w kern.sysv.shmmax=524288000
 sudo sysctl -w kern.sysv.shmmin=1
 sudo sysctl -w kern.sysv.shmseg=32
-sudo sysctl -w kern.sysv.shmall=65536
+sudo sysctl -w kern.sysv.shmall=131072000
 sudo sysctl -w kern.maxprocperuid=512