diff --git a/dlls/gdi32/tests/generated.c b/dlls/gdi32/tests/generated.c
index d0f8d3d610a..2bd6376e9e5 100644
--- a/dlls/gdi32/tests/generated.c
+++ b/dlls/gdi32/tests/generated.c
@@ -7049,5 +7049,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/kernel32/tests/generated.c b/dlls/kernel32/tests/generated.c
index 847a2cd95e1..be68a085936 100644
--- a/dlls/kernel32/tests/generated.c
+++ b/dlls/kernel32/tests/generated.c
@@ -2072,5 +2072,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/ntdll/tests/generated.c b/dlls/ntdll/tests/generated.c
index 479db65a6db..89b2e05b18a 100644
--- a/dlls/ntdll/tests/generated.c
+++ b/dlls/ntdll/tests/generated.c
@@ -3436,5 +3436,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/rpcrt4/tests/generated.c b/dlls/rpcrt4/tests/generated.c
index a97f032eb92..77ddd85ba8d 100644
--- a/dlls/rpcrt4/tests/generated.c
+++ b/dlls/rpcrt4/tests/generated.c
@@ -1020,5 +1020,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/shell32/tests/generated.c b/dlls/shell32/tests/generated.c
index 873a75e5a13..76eec39f212 100644
--- a/dlls/shell32/tests/generated.c
+++ b/dlls/shell32/tests/generated.c
@@ -2013,5 +2013,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/shlwapi/tests/generated.c b/dlls/shlwapi/tests/generated.c
index 1ebf96d9227..db44d275994 100644
--- a/dlls/shlwapi/tests/generated.c
+++ b/dlls/shlwapi/tests/generated.c
@@ -173,5 +173,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/urlmon/tests/generated.c b/dlls/urlmon/tests/generated.c
index 293081c77c2..8a2f353b043 100644
--- a/dlls/urlmon/tests/generated.c
+++ b/dlls/urlmon/tests/generated.c
@@ -379,5 +379,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/user32/tests/generated.c b/dlls/user32/tests/generated.c
index 282e84d71ff..d25de8fddd1 100644
--- a/dlls/user32/tests/generated.c
+++ b/dlls/user32/tests/generated.c
@@ -3835,5 +3835,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/dlls/wininet/tests/generated.c b/dlls/wininet/tests/generated.c
index 656b18b8a7c..ceb21deb869 100644
--- a/dlls/wininet/tests/generated.c
+++ b/dlls/wininet/tests/generated.c
@@ -1434,5 +1434,9 @@ static void test_pack(void)
 
 START_TEST(generated)
 {
+#ifdef _WIN64
+    ok(0, "The type size / alignment tests don't support Win64 yet\n");
+#else
     test_pack();
+#endif
 }
diff --git a/tools/winapi/winapi_test b/tools/winapi/winapi_test
index c1c742cc61a..58333dc5451 100755
--- a/tools/winapi/winapi_test
+++ b/tools/winapi/winapi_test
@@ -586,7 +586,11 @@ sub output_footer($$$) {
     print OUT "START_TEST(generated)\n";
     print OUT "{\n";
     foreach my $test (@tests) {
+	print OUT "#ifdef _WIN64\n";
+	print OUT "    ok(0, \"The type size / alignment tests don't support Win64 yet\\n\");\n";
+	print OUT "#else\n";
 	print OUT "    test_$test();\n";
+	print OUT "#endif\n";
     }
     print OUT "}\n";
 }