diff --git a/src/core/libraries/kernel/memory.cpp b/src/core/libraries/kernel/memory.cpp
index 8d2bd5937..7b3ac5646 100644
--- a/src/core/libraries/kernel/memory.cpp
+++ b/src/core/libraries/kernel/memory.cpp
@@ -512,7 +512,7 @@ s32 PS4_SYSV_ABI sceKernelConfiguredFlexibleMemorySize(u64* sizeOut) {
 
 int PS4_SYSV_ABI sceKernelMunmap(void* addr, size_t len) {
     LOG_INFO(Kernel_Vmm, "addr = {}, len = {:#x}", fmt::ptr(addr), len);
-    if (len <= 0) {
+    if (len == 0) {
         return ORBIS_KERNEL_ERROR_EINVAL;
     }
     auto* memory = Core::Memory::Instance();