X-Git-Url: http://git.iain.cx/?p=nssm.git;a=blobdiff_plain;f=gui.cpp;h=0fa11f4ca4df446b65823bd340786d108074eba9;hp=628b136ff446d26baba8f88d5d145901a9d31f6c;hb=10c2787dcb07398b3a808efbac929f568f3d215a;hpb=203bfaec37cdcf72dc9c9633866179d64795780f

diff --git a/gui.cpp b/gui.cpp
index 628b136..0fa11f4 100644
--- a/gui.cpp
+++ b/gui.cpp
@@ -354,7 +354,7 @@ static inline void set_hook_tab(int event_index, int action_index, bool changed)
     SetEnvironmentVariable(hook_name, cmd);
   }
   else {
-    GetEnvironmentVariable(hook_name, cmd, _countof(cmd));
+    if (! GetEnvironmentVariable(hook_name, cmd, _countof(cmd))) cmd[0] = _T('\0');
     SetDlgItemText(tablist[NSSM_TAB_HOOKS], IDC_HOOK, cmd);
   }
 }