diff --git a/configure.ac b/configure.ac
index be489a9e..c198e56e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -72,7 +72,7 @@ AC_SUBST(PSPSDK_INCLUDEDIR)
 AC_SUBST(PSPSDK_LIBDIR)
 
 # CFLAGS and CXXFLAGS used to build pspsdk libraries.
-PSPSDK_CFLAGS="$CFLAGS -mno-gpopt -Wall"
+PSPSDK_CFLAGS="$CFLAGS -mno-gpopt -Wall -D_PSP_FW_VERSION=600"
 PSPSDK_CXXFLAGS="$PSPSDK_CFLAGS -fno-exceptions -fno-rtti"
 if test "$with_pthread" = no ; then
 	PSPSDK_CFLAGS="$PSPSDK_CFLAGS -DPSP_WITHOUT_PTHREAD"
diff --git a/src/base/build.mak b/src/base/build.mak
index 132cdecb..24351741 100644
--- a/src/base/build.mak
+++ b/src/base/build.mak
@@ -35,7 +35,7 @@ CXXFLAGS := $(CFLAGS) $(CXXFLAGS)
 ASFLAGS  := $(CFLAGS) $(ASFLAGS)
 
 ifeq ($(PSP_FW_VERSION),)
-PSP_FW_VERSION=150
+PSP_FW_VERSION=600
 endif
 
 EXPAND_MEMORY = 0
diff --git a/src/base/build_prx.mak b/src/base/build_prx.mak
index c8f15a90..671c95f2 100644
--- a/src/base/build_prx.mak
+++ b/src/base/build_prx.mak
@@ -37,7 +37,7 @@ LIBS := $(LIBS) -lpspdebug -lpspdisplay -lpspge -lpspctrl
 endif
 
 ifeq ($(PSP_FW_VERSION),)
-PSP_FW_VERSION=150
+PSP_FW_VERSION=600
 endif
 
 CFLAGS += -D_PSP_FW_VERSION=$(PSP_FW_VERSION)
diff --git a/src/base/pspdev.cmake b/src/base/pspdev.cmake
index a99cd99a..af3452f8 100644
--- a/src/base/pspdev.cmake
+++ b/src/base/pspdev.cmake
@@ -30,6 +30,7 @@ link_directories( ${PSPDEV}/lib ${PSPDEV}/psp/lib ${PSPDEV}/psp/sdk/lib)
 
 add_definitions("-D__PSP__")
 add_definitions("-DPSP")
+add_definitions("-D_PSP_FW_VERSION=600")
 SET(PLATFORM_PSP TRUE)
 SET(PSP TRUE)