diff --git a/wine-5.0-gcc10.patch b/wine-5.0-gcc10.patch
index 861b8e2..b885c67 100644
--- a/wine-5.0-gcc10.patch
+++ b/wine-5.0-gcc10.patch
@@ -20,3 +20,14 @@
  
  /* Helper functions */
  extern TW_UINT16 GPHOTO2_SaneCapability (pTW_CAPABILITY pCapability, TW_UINT16 action) DECLSPEC_HIDDEN;
+--- a/dlls/gphoto2.ds/gphoto2_main.c	2020-01-22 10:22:39.110786117 -0600
++++ b/dlls/gphoto2.ds/gphoto2_main.c	2020-01-22 10:22:51.743818190 -0600
+@@ -33,6 +33,8 @@
+ 
+ WINE_DEFAULT_DEBUG_CHANNEL(twain);
+ 
++struct tagActiveDS activeDS;
++
+ DSMENTRYPROC GPHOTO2_dsmentry;
+ 
+ #ifdef HAVE_GPHOTO2