diff --git a/x11-toolkits/fox17/files/patch-lib_FXThread.cpp b/x11-toolkits/fox17/files/patch-lib_FXThread.cpp
new file mode 100644
index 000000000000..b09a711dd733
--- /dev/null
+++ b/x11-toolkits/fox17/files/patch-lib_FXThread.cpp
@@ -0,0 +1,11 @@
+--- lib/FXThread.cpp.orig	2025-05-01 10:27:45 UTC
++++ lib/FXThread.cpp
+@@ -387,7 +387,7 @@ FXTime FXThread::ticks(){
+   tbl&=-(FXint)(tbu0==tbu1);
+   return (((FXTime)tbu1) << 32) | tbl;
+ #elif (_POSIX_C_SOURCE >= 199309L)
+-  const NSTime seconds=1000000000;
++  const FXTime seconds=1000000000;
+   struct timespec ts;
+   clock_gettime(CLOCK_MONOTONIC,&ts);   // Monotonic: no jumps!
+   return ts.tv_sec*seconds+ts.tv_nsec;