diff --git a/src/creatwth.cpp b/src/creatwth.cpp
index c2819aff..54721e53 100644
--- a/src/creatwth.cpp
+++ b/src/creatwth.cpp
@@ -927,15 +927,18 @@ BOOL WINAPI DetourCreateProcessWithDllA(_In_opt_ LPCSTR lpApplicationName,
                                lpCurrentDirectory,
                                lpStartupInfo,
                                &pi);
+
+    if (!fResult) {
+        if (lpProcessInformation != NULL) {
+            ZeroMemory(lpProcessInformation, sizeof(*lpProcessInformation));
+        }
+        return FALSE;
+    }
 
     if (lpProcessInformation != NULL) {
         CopyMemory(lpProcessInformation, &pi, sizeof(pi));
     }
 
-    if (!fResult) {
-        return FALSE;
-    }
-
     LPCSTR rlpDlls[2];
     DWORD nDlls = 0;
     if (lpDllName != NULL) {
@@ -985,12 +988,15 @@ BOOL WINAPI DetourCreateProcessWithDllW(_In_opt_ LPCWSTR lpApplicationName,
                                     lpStartupInfo,
                                     &pi);
 
-    if (lpProcessInformation) {
-        CopyMemory(lpProcessInformation, &pi, sizeof(pi));
-    }
-
-    if (!fResult) {
+    if (!fResult) {
+        if (lpProcessInformation != NULL) {
+            ZeroMemory(lpProcessInformation, sizeof(*lpProcessInformation));
+        }
         return FALSE;
+    }
+
+    if (lpProcessInformation != NULL) {
+        CopyMemory(lpProcessInformation, &pi, sizeof(pi));
     }
 
     LPCSTR rlpDlls[2];