diff --git a/Misc/NEWS b/Misc/NEWS
index 9f7111f..0b9aade 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -126,6 +126,8 @@
 Extension Modules
 -----------------
 
+- Patch #1572724: fix typo ('=' instead of '==') in _msi.c.
+
 - Bug #1572832: fix a bug in ISO-2022 codecs which may cause segfault
   when encoding non-BMP unicode characters.
 
diff --git a/PC/_msi.c b/PC/_msi.c
index 35f137a..f4af92a 100644
--- a/PC/_msi.c
+++ b/PC/_msi.c
@@ -495,7 +495,7 @@
 
     status = MsiSummaryInfoGetProperty(si->h, field, &type, &ival, 
 	&fval, sval, &ssize);
-    if (status = ERROR_MORE_DATA) {
+    if (status == ERROR_MORE_DATA) {
 	sval = malloc(ssize);
         status = MsiSummaryInfoGetProperty(si->h, field, &type, &ival, 
     	    &fval, sval, &ssize);