diff --git a/include/execp.cpp b/include/execp.cpp
index 678ee4f7d..6d4e74336 100755
--- a/include/execp.cpp
+++ b/include/execp.cpp
@@ -71,10 +71,13 @@ int TExternal_app::run(
   { 
     main_app().begin_wait();
     _exitcode = WinExec((char*)(const char*)path, SW_SHOW);
-    
-    while (_exitcode == 16)
+
+    for (int maxtry = 5 ; maxtry > 0 && _exitcode == 16; maxtry--)
     {
-      const int spc = path.find(' ');
+      int spc = path.find(' ');
+      
+      if (spc < 0)
+        spc = path.len();
       TFilename name(path.left(spc)), oldname(name);
       
       name.ext("");