diff --git a/configs/linux-dri b/configs/linux-dri
index 85b6ea0f703..c3e8c58a17d 100644
--- a/configs/linux-dri
+++ b/configs/linux-dri
@@ -22,6 +22,7 @@ ARCH_FLAGS ?=
 DEFINES = -D_POSIX_SOURCE -D_POSIX_C_SOURCE=199309L -D_SVID_SOURCE \
 	-D_BSD_SOURCE -D_GNU_SOURCE \
 	-DPTHREADS -DUSE_EXTERNAL_DXTN_LIB=1 -DIN_DRI_DRIVER \
+	-DDEBUG \
 	-DGLX_DIRECT_RENDERING -DHAVE_ALIAS
 
 X11_INCLUDES = -I/usr/X11R6/include