diff --git a/src/auth/pam.c b/src/auth/pam.c
index f99ebdfd..3c4dd882 100644
--- a/src/auth/pam.c
+++ b/src/auth/pam.c
@@ -45,7 +45,7 @@
 #include <pcl.h>
 #include <str.h>
 
-#define PAM_STACK_SIZE (128*1024)
+#define PAM_STACK_SIZE (96*1024)
 
 #define MAX_REPLIES 2