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-rw-r--r--src/engine/client/ec_gfx.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/engine/client/ec_gfx.c b/src/engine/client/ec_gfx.c
index c13b7c7e..7d39fdff 100644
--- a/src/engine/client/ec_gfx.c
+++ b/src/engine/client/ec_gfx.c
@@ -17,6 +17,7 @@
 /* compressed textures */
 #define GL_COMPRESSED_RGB_ARB 0x84ED
 #define GL_COMPRESSED_RGBA_ARB 0x84EE
+#define GL_COMPRESSED_ALPHA_ARB 0x84E9
 
 #define TEXTURE_MAX_ANISOTROPY_EXT 0x84FE