diff --git a/apple/iOS/RetroArch_iOS.xcodeproj/project.pbxproj b/apple/iOS/RetroArch_iOS.xcodeproj/project.pbxproj
index 2593bfb4d3..dd9b3aad9f 100644
--- a/apple/iOS/RetroArch_iOS.xcodeproj/project.pbxproj
+++ b/apple/iOS/RetroArch_iOS.xcodeproj/project.pbxproj
@@ -509,6 +509,7 @@
 					"-DHAVE_LAKKA",
 					"-DHAVE_GLUI",
 					"-DHAVE_XMB",
+					"-D_LZMA_UINT32_IS_ULONG",
 				);
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				VALID_ARCHS = "armv7 armv7s";
@@ -564,6 +565,7 @@
 					"-DHAVE_LAKKA",
 					"-DHAVE_GLUI",
 					"-DHAVE_XMB",
+					"-D_LZMA_UINT32_IS_ULONG",
 				);
 				"OTHER_CFLAGS[arch=*]" = (
 					"-DNS_BLOCK_ASSERTIONS=1",
@@ -596,6 +598,7 @@
 					"-DHAVE_LAKKA",
 					"-DHAVE_GLUI",
 					"-DHAVE_XMB",
+					"-D_LZMA_UINT32_IS_ULONG",
 				);
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "";