diff --git a/r_qshader.h b/r_qshader.h
index ce38ff7f0..08526ebca 100644
--- a/r_qshader.h
+++ b/r_qshader.h
@@ -14,7 +14,7 @@
 #define Q3TEXTUREFLAG_CAMERA 2048
 #define Q3TEXTUREFLAG_TRANSPARENTSORT 4096
 
-#define Q3PATHLENGTH 64
+#define Q3PATHLENGTH 64+1 ///< Q3 allows 64 bytes excluding the \0 terminator
 #define TEXTURE_MAXFRAMES 64
 #define Q3WAVEPARMS 4
 #define Q3DEFORM_MAXPARMS 3