diff --git a/FlightGear.iss b/FlightGear.iss
index 8dcfbf6..14db0f5 100644
--- a/FlightGear.iss
+++ b/FlightGear.iss
@@ -62,7 +62,7 @@
 #define ExcludedBinaries "*smooth.exe,metar.exe"
 
 ; Exclude XCF files from FGData to keep the size down
-#define FGDataExcludes "*.xcf,AI\Aircraft\Gee-Bee,*.dds"
+#define FGDataExcludes "*.xcf,AI\Aircraft\Gee-Bee,*.pdf"
 
 #include "FlightGear-files.iss"