X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/b0ce1eab668ac2e4779bbf8c3e6ef193d0ab0368..1d8bb8f9bc90a492073b93ef3b422ac947c873e7:/LUFA/Drivers/USB/LowLevel/LowLevel.h?ds=sidebyside

diff --git a/LUFA/Drivers/USB/LowLevel/LowLevel.h b/LUFA/Drivers/USB/LowLevel/LowLevel.h
index dc01d24e5..1a92d470b 100644
--- a/LUFA/Drivers/USB/LowLevel/LowLevel.h
+++ b/LUFA/Drivers/USB/LowLevel/LowLevel.h
@@ -70,6 +70,10 @@
 		#endif
 
 	/* Preprocessor Checks and Defines: */
+		#if !defined(__INCLUDE_FROM_USB_DRIVER)
+			#error Do not include this file directly. Include LUFA/Drivers/USB.h instead.
+		#endif
+
 		#if !defined(F_CLOCK)
 			#error F_CLOCK is not defined. You must define F_CLOCK to the frequency of the unprescaled input clock in your project makefile.
 		#endif