diff --git a/Source/kwsys/ProcessWin32.c b/Source/kwsys/ProcessWin32.c
index 2654a73ebd..cba1e61bef 100644
--- a/Source/kwsys/ProcessWin32.c
+++ b/Source/kwsys/ProcessWin32.c
@@ -379,7 +379,7 @@ kwsysProcess* kwsysProcess_New(void)
 
     /* Construct the executable name from the process id and kwsysProcess
        instance.  This should be unique.  */
-    sprintf(fwdName, KWSYS_NAMESPACE_STRING "pew9xfwd_%u_%p.exe",
+    sprintf(fwdName, KWSYS_NAMESPACE_STRING "pew9xfwd_%ld_%p.exe",
             GetCurrentProcessId(), cp);
 
     /* If we have a temp directory, use it.  */
diff --git a/Source/kwsys/SystemInformation.cxx b/Source/kwsys/SystemInformation.cxx
index ee762c7f63..058fddd4b1 100644
--- a/Source/kwsys/SystemInformation.cxx
+++ b/Source/kwsys/SystemInformation.cxx
@@ -2998,7 +2998,7 @@ bool SystemInformationImplementation::QueryOSInformation()
             }
           }
 
-        sprintf (operatingSystem, "%s(Build %d)", osvi.szCSDVersion, osvi.dwBuildNumber & 0xFFFF);
+        sprintf (operatingSystem, "%s(Build %ld)", osvi.szCSDVersion, osvi.dwBuildNumber & 0xFFFF);
         this->OSVersion = operatingSystem; 
         }
       else 
@@ -3047,7 +3047,7 @@ bool SystemInformationImplementation::QueryOSInformation()
       if (osvi.dwMajorVersion <= 4) 
         {
         // NB: NT 4.0 and earlier.
-        sprintf (operatingSystem, "version %d.%d %s (Build %d)",
+        sprintf (operatingSystem, "version %ld.%ld %s (Build %ld)",
                  osvi.dwMajorVersion,
                  osvi.dwMinorVersion,
                  osvi.szCSDVersion,
@@ -3078,7 +3078,7 @@ bool SystemInformationImplementation::QueryOSInformation()
       else 
         { 
         // Windows 2000 and everything else.
-        sprintf (operatingSystem,"%s(Build %d)", osvi.szCSDVersion, osvi.dwBuildNumber & 0xFFFF);
+        sprintf (operatingSystem,"%s(Build %ld)", osvi.szCSDVersion, osvi.dwBuildNumber & 0xFFFF);
         this->OSVersion = operatingSystem;
         }
       break;
diff --git a/Source/kwsys/SystemTools.cxx b/Source/kwsys/SystemTools.cxx
index 7cd404eb5a..d5d530de9f 100644
--- a/Source/kwsys/SystemTools.cxx
+++ b/Source/kwsys/SystemTools.cxx
@@ -3125,9 +3125,9 @@ void SystemTools::SplitPath(const char* p,
     if(root.size() == 1)
       {
 #if defined(_WIN32) && !defined(__CYGWIN__)
-      if(const char* p = getenv("USERPROFILE"))
+      if(const char* userp = getenv("USERPROFILE"))
         {
-        homedir = p;
+        homedir = userp;
         }
       else
 #endif
@@ -4279,10 +4279,10 @@ kwsys_stl::string SystemTools::GetOperatingSystemNameAndVersion()
           }
 
         res += " ";
-        sprintf(buffer, "%d", osvi.dwMajorVersion);
+        sprintf(buffer, "%ld", osvi.dwMajorVersion);
         res += buffer;
         res += ".";
-        sprintf(buffer, "%d", osvi.dwMinorVersion);
+        sprintf(buffer, "%ld", osvi.dwMinorVersion);
         res += buffer;
         }
 
@@ -4304,7 +4304,7 @@ kwsys_stl::string SystemTools::GetOperatingSystemNameAndVersion()
         if (lRet == ERROR_SUCCESS)
           {
           res += " Service Pack 6a (Build ";
-          sprintf(buffer, "%d", osvi.dwBuildNumber & 0xFFFF);
+          sprintf(buffer, "%ld", osvi.dwBuildNumber & 0xFFFF);
           res += buffer;
           res += ")";
           }
@@ -4313,7 +4313,7 @@ kwsys_stl::string SystemTools::GetOperatingSystemNameAndVersion()
           res += " ";
           res += osvi.szCSDVersion;
           res += " (Build ";
-          sprintf(buffer, "%d", osvi.dwBuildNumber & 0xFFFF);
+          sprintf(buffer, "%ld", osvi.dwBuildNumber & 0xFFFF);
           res += buffer;
           res += ")";
           }
@@ -4325,7 +4325,7 @@ kwsys_stl::string SystemTools::GetOperatingSystemNameAndVersion()
         res += " ";
         res += osvi.szCSDVersion;
         res += " (Build ";
-        sprintf(buffer, "%d", osvi.dwBuildNumber & 0xFFFF);
+        sprintf(buffer, "%ld", osvi.dwBuildNumber & 0xFFFF);
         res += buffer;
         res += ")";
         }