diff --git a/dlls/wininet/http.c b/dlls/wininet/http.c
index 38f6575c1fd..cc9b89d1129 100644
--- a/dlls/wininet/http.c
+++ b/dlls/wininet/http.c
@@ -4521,7 +4521,7 @@ static BOOL HTTP_ParseDateAsAsctime(LPCWSTR value, FILETIME *ft)
     /* asctime() doesn't report a timezone, but some web servers do, so accept
      * with or without GMT.
      */
-    if (*ptr && wcscmp(ptr, L"GMT"))
+    if (*ptr && (wcscmp(ptr, L"GMT") && wcscmp(ptr, L"UTC")))
     {
         ERR("unexpected timezone %s\n", debugstr_w(ptr));
         return FALSE;
@@ -4598,7 +4598,7 @@ static BOOL HTTP_ParseRfc1123Date(LPCWSTR value, FILETIME *ft)
     while (iswspace(*ptr))
         ptr++;
 
-    if (wcscmp(ptr, L"GMT"))
+    if (wcscmp(ptr, L"GMT") && wcscmp(ptr, L"UTC"))
     {
         ERR("unexpected time zone %s\n", debugstr_w(ptr));
         return FALSE;
@@ -4715,7 +4715,7 @@ static BOOL HTTP_ParseRfc850Date(LPCWSTR value, FILETIME *ft)
     while (iswspace(*ptr))
         ptr++;
 
-    if (wcscmp(ptr, L"GMT"))
+    if (wcscmp(ptr, L"GMT") && wcscmp(ptr, L"UTC"))
     {
         ERR("unexpected time zone %s\n", debugstr_w(ptr));
         return FALSE;
diff --git a/dlls/wininet/tests/internet.c b/dlls/wininet/tests/internet.c
index c432de9e488..f2579c4993a 100644
--- a/dlls/wininet/tests/internet.c
+++ b/dlls/wininet/tests/internet.c
@@ -1116,9 +1116,11 @@ static void test_InternetTimeToSystemTime(void)
     test_data[] =
     {
         { "Fri, 07 Jan 2005 12:06:35 GMT", &expect1, TRUE },
+        { "Fri, 07 Jan 2005 12:06:35 UTC", &expect1, TRUE },
         { " fri, 7 jan 2005 12 06 35",     &expect1, TRUE },
         { "Fri, 07-01-2005 12:06:35",      &expect1, TRUE },
         { "5, 07-01-2005 12:06:35 GMT",    &expect1, TRUE },
+        { "5, 07-01-2005 12:06:35 UTC",    &expect1, TRUE },
         { "5, 07-01-2005 12:06:35 GMT;",   &expect1, TRUE },
         { "5, 07-01-2005 12:06:35 GMT123", &expect1, TRUE },
         { "2, 11 01 2022 11 13 05",        &expect2, TRUE },
@@ -1126,6 +1128,9 @@ static void test_InternetTimeToSystemTime(void)
         { "2, 11*01/2022 11+13=05",        &expect2, TRUE },
         { "2, 11-Jan-2022 11:13:05",       &expect2, TRUE },
         { "Fr",                            NULL,     FALSE },
+        { "Fri Jan 7 12:06:35 2005",       &expect1, TRUE, TRUE },
+        { "Fri Jan 7 12:06:35 2005 GMT",   &expect1, TRUE, TRUE },
+        { "Fri Jan 7 12:06:35 2005 UTC",   &expect1, TRUE, TRUE },
     };
 
     ret = pInternetTimeToSystemTimeA(NULL, NULL, 0);