diff --git a/tinyldap.c b/tinyldap.c
index a52b171..8393147 100644
--- a/tinyldap.c
+++ b/tinyldap.c
@@ -2490,6 +2490,7 @@ static int install_syscall_filter(void) {
     ALLOW_SYSCALL(mmap),
 #endif
     ALLOW_SYSCALL(mremap),
+    ALLOW_SYSCALL(munmap),
 
 #ifdef __NR_socketcall
     ALLOW_SYSCALL(socketcall),