diff --git a/dlls/msi/tests/action.c b/dlls/msi/tests/action.c
index 82afd1830d4..811bd99c53d 100644
--- a/dlls/msi/tests/action.c
+++ b/dlls/msi/tests/action.c
@@ -2318,7 +2318,7 @@ static void write_msi_summary_info(MSIHANDLE db, INT version, INT wordcount, con
     ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %u\n", r);
 
     r = MsiSummaryInfoSetPropertyA(summary, PID_REVNUMBER, VT_LPSTR, 0, NULL,
-                                   "{004757CA-5092-49c2-AD20-28E1CE0DF5F2}");
+                                   "{004757CA-5092-49C2-AD20-28E1CE0DF5F2}");
     ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %u\n", r);
 
     r = MsiSummaryInfoSetPropertyA(summary, PID_PAGECOUNT, VT_I4, version, NULL, NULL);
@@ -2947,7 +2947,7 @@ currentuser:
     ok(res == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", res);
 
     CHECK_DEL_REG_STR(hkey, "ProductName", "MSITEST");
-    CHECK_DEL_REG_STR(hkey, "PackageCode", "AC75740029052c94DA02821EECD05F2F");
+    CHECK_DEL_REG_STR(hkey, "PackageCode", "AC75740029052C94DA02821EECD05F2F");
     CHECK_DEL_REG_DWORD(hkey, "Language", 1033);
     CHECK_DEL_REG_DWORD(hkey, "Version", 0x1010001);
     if (!old_installer)
@@ -3028,7 +3028,7 @@ machprod:
     ok(res == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", res);
 
     CHECK_DEL_REG_STR(hkey, "ProductName", "MSITEST");
-    CHECK_DEL_REG_STR(hkey, "PackageCode", "AC75740029052c94DA02821EECD05F2F");
+    CHECK_DEL_REG_STR(hkey, "PackageCode", "AC75740029052C94DA02821EECD05F2F");
     CHECK_DEL_REG_DWORD(hkey, "Language", 1033);
     CHECK_DEL_REG_DWORD(hkey, "Version", 0x1010001);
     if (!old_installer)
diff --git a/dlls/msi/tests/automation.c b/dlls/msi/tests/automation.c
index 630ff76760b..bc0a63295a6 100644
--- a/dlls/msi/tests/automation.c
+++ b/dlls/msi/tests/automation.c
@@ -199,7 +199,7 @@ typedef struct _msi_summary_info
 static const msi_summary_info summary_info[] =
 {
     ADD_INFO_LPSTR(PID_TEMPLATE, ";1033"),
-    ADD_INFO_LPSTR(PID_REVNUMBER, "{004757CA-5092-49c2-AD20-28E1CE0DF5F2}"),
+    ADD_INFO_LPSTR(PID_REVNUMBER, "{004757CA-5092-49C2-AD20-28E1CE0DF5F2}"),
     ADD_INFO_I4(PID_PAGECOUNT, 100),
     ADD_INFO_I4(PID_WORDCOUNT, 0),
     ADD_INFO_FILETIME(PID_CREATE_DTM, &systemtime),
diff --git a/dlls/msi/tests/install.c b/dlls/msi/tests/install.c
index ad3ea66c548..e41bef4d7b4 100644
--- a/dlls/msi/tests/install.c
+++ b/dlls/msi/tests/install.c
@@ -2462,7 +2462,7 @@ static void write_msi_summary_info(MSIHANDLE db, INT version, INT wordcount, con
     ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %u\n", r);
 
     r = MsiSummaryInfoSetPropertyA(summary, PID_REVNUMBER, VT_LPSTR, 0, NULL,
-                                   "{004757CA-5092-49c2-AD20-28E1CE0DF5F2}");
+                                   "{004757CA-5092-49C2-AD20-28E1CE0DF5F2}");
     ok(r == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %u\n", r);
 
     r = MsiSummaryInfoSetPropertyA(summary, PID_PAGECOUNT, VT_I4, version, NULL, NULL);
diff --git a/dlls/msi/tests/package.c b/dlls/msi/tests/package.c
index 8cf8f27a096..f2d940f49cd 100644
--- a/dlls/msi/tests/package.c
+++ b/dlls/msi/tests/package.c
@@ -2445,7 +2445,7 @@ static void test_msipackage(void)
     ok(r == ERROR_INSTALL_PACKAGE_INVALID,
        "Expected ERROR_INSTALL_PACKAGE_INVALID, got %d\n", r);
 
-    set_summary_str(hdb, PID_REVNUMBER, "{004757CD-5092-49c2-AD20-28E1CE0DF5F2}");
+    set_summary_str(hdb, PID_REVNUMBER, "{004757CD-5092-49C2-AD20-28E1CE0DF5F2}");
     r = MsiOpenPackage(name, &hpack);
     ok(r == ERROR_SUCCESS,
        "Expected ERROR_SUCCESS, got %d\n", r);