diff --git a/Mac/BuildScript/build-installer.py b/Mac/BuildScript/build-installer.py
index f54a95b22e118fc..c45430243343cc7 100755
--- a/Mac/BuildScript/build-installer.py
+++ b/Mac/BuildScript/build-installer.py
@@ -1402,7 +1402,10 @@ def patchFile(inPath, outPath):
     data = data.replace('$FULL_VERSION', getFullVersion())
     data = data.replace('$VERSION', getVersion())
     data = data.replace('$MACOSX_DEPLOYMENT_TARGET', ''.join((DEPTARGET, ' or later')))
-    data = data.replace('$ARCHITECTURES', ", ".join(universal_opts_map[UNIVERSALARCHS]))
+    archs = universal_opts_map[UNIVERSALARCHS]
+    data = data.replace('$ARCHITECTURES', ", ".join(archs))
+    data = data.replace('$ARCHITECTURE_NOUN',
+                        "architecture" if len(archs) == 1 else "architectures")
     data = data.replace('$INSTALL_SIZE', installSize())
     data = data.replace('$THIRD_PARTY_LIBS', "\\\n".join(THIRD_PARTY_LIBS))
 
diff --git a/Mac/BuildScript/resources/ReadMe.rtf b/Mac/BuildScript/resources/ReadMe.rtf
index d19b542b7e6c5a8..47f607d2f3c6ea5 100644
--- a/Mac/BuildScript/resources/ReadMe.rtf
+++ b/Mac/BuildScript/resources/ReadMe.rtf
@@ -6,7 +6,7 @@
 \margl1440\margr1440\vieww15140\viewh15740\viewkind0
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0
 
-\f0\fs24 \cf0 This package will install Python $FULL_VERSION for macOS $MACOSX_DEPLOYMENT_TARGET for the following architecture(s): $ARCHITECTURES.\
+\f0\fs24 \cf0 This package will install Python $FULL_VERSION for macOS $MACOSX_DEPLOYMENT_TARGET for the following $ARCHITECTURE_NOUN: $ARCHITECTURES.\
 \
 \pard\tx720\tx1440\tx2160\tx2880\tx3600\tx4320\tx5040\tx5760\tx6480\tx7200\tx7920\tx8640\pardirnatural\partightenfactor0