diff --git a/SConstruct b/SConstruct
index 85465905559..c23a19762fb 100644
--- a/SConstruct
+++ b/SConstruct
@@ -2370,7 +2370,17 @@ env.AlwaysBuild( "lint" )
 def getSystemInstallName():
     dist_arch = GetOption("distarch")
     arch_name = env['TARGET_ARCH'] if not dist_arch else dist_arch
-    n = env.GetTargetOSName() + "-" + arch_name
+
+    # We need to make sure the directory names inside dist tarballs are permanently
+    # consistent, even if the target OS name used in scons is different. Any differences
+    # between the names used by env.TargetOSIs/env.GetTargetOSName should be added
+    # to the translation dictionary below.
+    os_name_translations = {
+        'windows': 'win32'
+    }
+    os_name = env.GetTargetOSName()
+    os_name = os_name_translations.get(os_name, os_name)
+    n = os_name + "-" + arch_name
 
     if len(mongo_modules):
             n += "-" + "-".join(m.name for m in mongo_modules)