diff --git a/Machines/Apple/AppleIIgs/MemoryMap.hpp b/Machines/Apple/AppleIIgs/MemoryMap.hpp
index ab5b01b0a..d5676ad20 100644
--- a/Machines/Apple/AppleIIgs/MemoryMap.hpp
+++ b/Machines/Apple/AppleIIgs/MemoryMap.hpp
@@ -77,7 +77,7 @@ class MemoryMap {
 			}
 
 			const auto physical = physical_address(region, address);
-			assert(physical >= 0 && physical <= 0xff'ffff);
+			assert(physical <= 0xff'ffff);
 			return shadow_pages_[(physical >> 10) & 127] & shadow_banks_[physical >> 17];
 		}
 		void write(const Region &region, uint32_t address, uint8_t value) {