diff --git a/dlls/advapi32/tests/registry.c b/dlls/advapi32/tests/registry.c
index a8e783c4d02..8808822efe0 100644
--- a/dlls/advapi32/tests/registry.c
+++ b/dlls/advapi32/tests/registry.c
@@ -1803,6 +1803,7 @@ static void test_reg_query_info(void)
     ok(classbufferW[0] == 0x5555, "classbufferW[0] = 0x%x\n", classbufferW[0]);
 
     /* empty key */
+    sdlen = 0;
     ret = RegQueryInfoKeyA(subkey, NULL, &classlen, NULL, &subkeys, &maxsubkeylen, &maxclasslen, &values, &maxvaluenamelen, &maxvaluelen, &sdlen, &lastwrite);
     ok(ret == ERROR_SUCCESS, "ret = %d\n", ret);
     ok(classlen == strlen(subkey_class), "classlen = %u\n", classlen);
@@ -1812,10 +1813,11 @@ static void test_reg_query_info(void)
     ok(values == 0, "values = %u\n", values);
     ok(maxvaluenamelen == 0, "maxvaluenamelen = %u\n", maxvaluenamelen);
     ok(maxvaluelen == 0, "maxvaluelen = %u\n", maxvaluelen);
-    ok(sdlen != 0, "sdlen = %u\n", sdlen);
+    todo_wine ok(sdlen != 0, "sdlen = %u\n", sdlen);
     ok(lastwrite.dwLowDateTime != 0, "lastwrite.dwLowDateTime = %u\n", lastwrite.dwLowDateTime);
     ok(lastwrite.dwHighDateTime != 0, "lastwrite.dwHighDateTime = %u\n", lastwrite.dwHighDateTime);
 
+    sdlen = 0;
     ret = RegQueryInfoKeyW(subkey, NULL, &classlen, NULL, &subkeys, &maxsubkeylen, &maxclasslen, &values, &maxvaluenamelen, &maxvaluelen, &sdlen, &lastwrite);
     ok(ret == ERROR_SUCCESS, "ret = %d\n", ret);
     ok(classlen == strlen(subkey_class), "classlen = %u\n", classlen);
@@ -1825,7 +1827,7 @@ static void test_reg_query_info(void)
     ok(values == 0, "values = %u\n", values);
     ok(maxvaluenamelen == 0, "maxvaluenamelen = %u\n", maxvaluenamelen);
     ok(maxvaluelen == 0, "maxvaluelen = %u\n", maxvaluelen);
-    ok(sdlen != 0, "sdlen = %u\n", sdlen);
+    todo_wine ok(sdlen != 0, "sdlen = %u\n", sdlen);
     ok(lastwrite.dwLowDateTime != 0, "lastwrite.dwLowDateTime = %u\n", lastwrite.dwLowDateTime);
     ok(lastwrite.dwHighDateTime != 0, "lastwrite.dwHighDateTime = %u\n", lastwrite.dwHighDateTime);
 
@@ -1836,6 +1838,7 @@ static void test_reg_query_info(void)
     ok(ret == ERROR_SUCCESS, "Expected ERROR_SUCCESS, got %d\n", ret);
 
     /* with subkey & default value */
+    sdlen = 0;
     ret = RegQueryInfoKeyA(subkey, NULL, &classlen, NULL, &subkeys, &maxsubkeylen, &maxclasslen, &values, &maxvaluenamelen, &maxvaluelen, &sdlen, &lastwrite);
     ok(ret == ERROR_SUCCESS, "ret = %d\n", ret);
     ok(classlen == strlen(subkey_class), "classlen = %u\n", classlen);
@@ -1845,10 +1848,11 @@ static void test_reg_query_info(void)
     ok(values == 1, "values = %u\n", values);
     ok(maxvaluenamelen == 0, "maxvaluenamelen = %u\n", maxvaluenamelen);
     ok(maxvaluelen == sizeof("data") * sizeof(WCHAR), "maxvaluelen = %u\n", maxvaluelen);
-    ok(sdlen != 0, "sdlen = %u\n", sdlen);
+    todo_wine ok(sdlen != 0, "sdlen = %u\n", sdlen);
     ok(lastwrite.dwLowDateTime != 0, "lastwrite.dwLowDateTime = %u\n", lastwrite.dwLowDateTime);
     ok(lastwrite.dwHighDateTime != 0, "lastwrite.dwHighDateTime = %u\n", lastwrite.dwHighDateTime);
 
+    sdlen = 0;
     ret = RegQueryInfoKeyW(subkey, NULL, &classlen, NULL, &subkeys, &maxsubkeylen, &maxclasslen, &values, &maxvaluenamelen, &maxvaluelen, &sdlen, &lastwrite);
     ok(ret == ERROR_SUCCESS, "ret = %d\n", ret);
     ok(classlen == strlen(subkey_class), "classlen = %u\n", classlen);
@@ -1858,7 +1862,7 @@ static void test_reg_query_info(void)
     ok(values == 1, "values = %u\n", values);
     ok(maxvaluenamelen == 0, "maxvaluenamelen = %u\n", maxvaluenamelen);
     ok(maxvaluelen == sizeof("data") * sizeof(WCHAR), "maxvaluelen = %u\n", maxvaluelen);
-    ok(sdlen != 0, "sdlen = %u\n", sdlen);
+    todo_wine ok(sdlen != 0, "sdlen = %u\n", sdlen);
     ok(lastwrite.dwLowDateTime != 0, "lastwrite.dwLowDateTime = %u\n", lastwrite.dwLowDateTime);
     ok(lastwrite.dwHighDateTime != 0, "lastwrite.dwHighDateTime = %u\n", lastwrite.dwHighDateTime);