diff --git a/src/utility.cpp b/src/utility.cpp
index e3c32fe4..c431b7f5 100644
--- a/src/utility.cpp
+++ b/src/utility.cpp
@@ -569,7 +569,7 @@ BOOL PatchImport (HMODULE importmodule, moduleentry_t *patchModule)
                                     DbgReport(L"Hook dll \"%S\" import %S!%S()\n",
                                         strrchr(pszBuffer, '\\') + 1, patchModule->exportModuleName, importname);
                                 } else {
-                                    DbgReport(L"Hook dll \"%S\" import %S!%zu()\n",
+                                    DbgReport(L"Hook dll \"%S\" import %S!%Iu()\n",
                                         strrchr(pszBuffer, '\\') + 1, patchModule->exportModuleName, importname);
                                 }
 #endif
@@ -878,7 +878,7 @@ VOID RestoreImport (HMODULE importmodule, moduleentry_t* module)
                                 DbgReport(L"UnHook dll \"%S\" import %S!%S()\n",
                                     strrchr(pszBuffer, '\\') + 1, module->exportModuleName, importname);
                             } else {
-                                DbgReport(L"UnHook dll \"%S\" import %S!%zu()\n",
+                                DbgReport(L"UnHook dll \"%S\" import %S!%Iu()\n",
                                     strrchr(pszBuffer, '\\') + 1, module->exportModuleName, importname);
                             }
 #endif
diff --git a/src/vld.h b/src/vld.h
index b591ff3e..66b73aa9 100644
--- a/src/vld.h
+++ b/src/vld.h
@@ -341,7 +341,7 @@ __declspec(dllexport) int VLDResolveCallstacks();
 #define VLDGetOptions() (0)
 #define VLDGetReportFilename(a)
 #define VLDSetOptions(a, b, c)
-#define VLDSetReportHook(a, b)
+#define VLDSetReportHook(a, b) (-1)
 #define VLDSetModulesList(a)
 #define VLDGetModulesList(a, b) (FALSE)
 #define VLDSetReportOptions(a, b)