diff --git a/Makefile.libretro b/Makefile.libretro
index 2061f71..0045aaa 100644
--- a/Makefile.libretro
+++ b/Makefile.libretro
@@ -126,6 +126,9 @@ else ifeq ($(platform), psp1)
 	CXX = psp-g++$(EXE_EXT)
 	AR = psp-ar$(EXE_EXT)
 	PLATFORM_DEFINES := -DPSP -G0 -DLSB_FIRST -DHAVE_ASPRINTF
+	PLATFORM_DEFINES += -march=allegrex -mfp32 -mgp32 -mlong32 -mabi=eabi
+	PLATFORM_DEFINES += -fomit-frame-pointer -fstrict-aliasing
+	PLATFORM_DEFINES += -falign-functions=32 -falign-loops -falign-labels -falign-jumps
 	STATIC_LINKING = 1
 	EXTERNAL_ZLIB = 1