diff --git a/src/system/kernel/vm/vm.cpp b/src/system/kernel/vm/vm.cpp
index 70e2d9e2e0..3580fc5434 100644
--- a/src/system/kernel/vm/vm.cpp
+++ b/src/system/kernel/vm/vm.cpp
@@ -4761,7 +4761,7 @@ vm_try_reserve_memory(size_t amount)
 
 	//dprintf("try to reserve %lu bytes, %Lu left\n", amount, sAvailableMemory);
 
-	if (sAvailableMemory > amount) {
+	if (sAvailableMemory >= amount) {
 		sAvailableMemory -= amount;
 		status = B_OK;
 	} else
diff --git a/src/system/kernel/vm/vm_store_anonymous_noswap.cpp b/src/system/kernel/vm/vm_store_anonymous_noswap.cpp
index 31132c3ac1..15829ae60a 100644
--- a/src/system/kernel/vm/vm_store_anonymous_noswap.cpp
+++ b/src/system/kernel/vm/vm_store_anonymous_noswap.cpp
@@ -66,6 +66,9 @@ anonymous_commit(struct vm_store *_store, off_t size)
 			size = precommitted;
 	}
 
+	if (size == store->vm.committed_size)
+		return B_OK;
+
 	// Check to see how much we could commit - we need real memory
 
 	if (size > store->vm.committed_size) {