diff --git a/Source/cmLocalUnixMakefileGenerator3.cxx b/Source/cmLocalUnixMakefileGenerator3.cxx
index da6a1c643..c8a06aa71 100644
--- a/Source/cmLocalUnixMakefileGenerator3.cxx
+++ b/Source/cmLocalUnixMakefileGenerator3.cxx
@@ -607,6 +607,27 @@ cmLocalUnixMakefileGenerator3
     }
 }
 
+//----------------------------------------------------------------------------
+std::string
+cmLocalUnixMakefileGenerator3
+::ConvertShellCommand(std::string const& cmd, RelativeRoot root)
+{
+  if(this->WatcomWMake &&
+     cmSystemTools::FileIsFullPath(cmd.c_str()) &&
+     cmd.find_first_of("( )") != cmd.npos)
+    {
+    // On Watcom WMake use the windows short path for the command
+    // name.  This is needed to avoid funny quoting problems on
+    // lines with shell redirection operators.
+    std::string scmd;
+    if(cmSystemTools::GetShortPath(cmd.c_str(), scmd))
+      {
+      return this->Convert(scmd.c_str(), NONE, SHELL);
+      }
+    }
+  return this->Convert(cmd.c_str(), root, SHELL);
+}
+
 //----------------------------------------------------------------------------
 void
 cmLocalUnixMakefileGenerator3
@@ -646,13 +667,13 @@ cmLocalUnixMakefileGenerator3
   makefileStream
     << "# The CMake executable.\n"
     << "CMAKE_COMMAND = "
-    << this->Convert(cmakecommand.c_str(), FULL, SHELL).c_str()
+    << this->ConvertShellCommand(cmakecommand, FULL)
     << "\n"
     << "\n";
   makefileStream
     << "# The command to remove a file.\n"
     << "RM = "
-    << this->Convert(cmakecommand.c_str(),FULL,SHELL).c_str()
+    << this->ConvertShellCommand(cmakecommand, FULL)
     << " -E remove -f\n"
     << "\n";
 
@@ -662,7 +683,7 @@ cmLocalUnixMakefileGenerator3
     makefileStream
       << "# The program to use to edit the cache.\n"
       << "CMAKE_EDIT_COMMAND = "
-      << this->Convert(edit_cmd,FULL,SHELL) << "\n"
+      << this->ConvertShellCommand(edit_cmd, FULL) << "\n"
       << "\n";
     }
 
@@ -1019,22 +1040,9 @@ cmLocalUnixMakefileGenerator3
         // without the current directory being in the search path.
         cmd = "./" + cmd;
         }
-      if(this->WatcomWMake &&
-         cmSystemTools::FileIsFullPath(cmd.c_str()) &&
-         cmd.find(" ") != cmd.npos)
-        {
-        // On Watcom WMake use the windows short path for the command
-        // name.  This is needed to avoid funny quoting problems on
-        // lines with shell redirection operators.
-        std::string scmd;
-        if(cmSystemTools::GetShortPath(cmd.c_str(), scmd))
-          {
-          cmd = scmd;
-          }
-        }
       std::string launcher =
         this->MakeLauncher(cc, target, workingDir? NONE : START_OUTPUT);
-      cmd = launcher + this->Convert(cmd.c_str(),NONE,SHELL);
+      cmd = launcher + this->ConvertShellCommand(cmd, NONE);
 
       ccg.AppendArguments(c, cmd);
       if(content)
diff --git a/Source/cmLocalUnixMakefileGenerator3.h b/Source/cmLocalUnixMakefileGenerator3.h
index fab98da0e..45ac21de3 100644
--- a/Source/cmLocalUnixMakefileGenerator3.h
+++ b/Source/cmLocalUnixMakefileGenerator3.h
@@ -340,6 +340,7 @@ protected:
   void CheckMultipleOutputs(bool verbose);
 
 private:
+  std::string ConvertShellCommand(std::string const& cmd, RelativeRoot root);
   std::string MakeLauncher(const cmCustomCommand& cc, cmTarget* target,
                            RelativeRoot relative);