diff --git a/audio_driver/Makefile b/audio_driver/Makefile
index 3fe1165..d68f857 100644
--- a/audio_driver/Makefile
+++ b/audio_driver/Makefile
@@ -8,13 +8,10 @@ USE_KERNEL_LIBC = 1
 # Use only kernel libraries
 USE_KERNEL_LIBS = 1
 
-INCDIR = 
 CFLAGS = -Os -G0 -Wall -fno-builtin-printf
 CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
 ASFLAGS = $(CFLAGS)
 
-LIBDIR =
-
 LDFLAGS = -nostartfiles
 LIBS = -lpspaudio_driver
 
diff --git a/audio_driver/audio_driver.c b/audio_driver/audio_driver.c
index e5d0d33..b1444d3 100644
--- a/audio_driver/audio_driver.c
+++ b/audio_driver/audio_driver.c
@@ -1,7 +1,7 @@
 #include <pspsdk.h>
 #include <pspaudio_kernel.h>
 
-PSP_MODULE_INFO("audio_driver", PSP_MODULE_KERNEL, 1, 3);
+PSP_MODULE_INFO("audio_driver", PSP_MODULE_KERNEL, 1, 4);
 PSP_NO_CREATE_MAIN_THREAD();
 
 int pspAudioSetFrequency(int frequency) {
diff --git a/display_driver/Makefile b/display_driver/Makefile
index 7f7a8f5..0de6006 100644
--- a/display_driver/Makefile
+++ b/display_driver/Makefile
@@ -13,10 +13,7 @@ CFLAGS = -Os -G0 -Wall -fno-builtin-printf
 CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
 ASFLAGS = $(CFLAGS)
 
-LIBDIR =
-
 LDFLAGS = -nostartfiles
-LIBS =
 
 PSPSDK=$(shell psp-config --pspsdk-path)
 include $(PSPSDK)/lib/build_prx.mak
diff --git a/display_driver/display_driver.c b/display_driver/display_driver.c
index 62f3235..a38baa4 100644
--- a/display_driver/display_driver.c
+++ b/display_driver/display_driver.c
@@ -2,7 +2,7 @@
 #include <pspdisplay_kernel.h>
 #include <pspsysmem_kernel.h>
 
-PSP_MODULE_INFO("display_driver", PSP_MODULE_KERNEL, 1, 5);
+PSP_MODULE_INFO("display_driver", PSP_MODULE_KERNEL, 1, 6);
 PSP_NO_CREATE_MAIN_THREAD();
 
 int sceDisplayEnable(void);