diff --git a/kvm-all.c b/kvm-all.c
index cd4111d..82a9119 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -441,7 +441,7 @@
 
         d.slot = mem->slot;
 
-        if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) < 0) {
+        if (kvm_vm_ioctl(s, KVM_GET_DIRTY_LOG, &d) == -1) {
             DPRINTF("ioctl failed %d\n", errno);
             ret = -1;
             break;