diff --git a/dll/win32/setupapi/cfgmgr.c b/dll/win32/setupapi/cfgmgr.c
index 5d2f8cda459..c7087e6d0f2 100644
--- a/dll/win32/setupapi/cfgmgr.c
+++ b/dll/win32/setupapi/cfgmgr.c
@@ -1548,6 +1548,55 @@ CM_Delete_Range(
 }
 
 
+/***********************************************************************
+ * CM_Detect_Resource_Conflict [SETUPAPI.@]
+ */
+CONFIGRET
+WINAPI
+CM_Detect_Resource_Conflict(
+    _In_ DEVINST dnDevInst,
+    _In_ RESOURCEID ResourceID,
+    _In_reads_bytes_(ResourceLen) PCVOID ResourceData,
+    _In_ ULONG ResourceLen,
+    _Out_ PBOOL pbConflictDetected,
+    _In_ ULONG ulFlags)
+{
+    TRACE("CM_Detect_Resource_Conflict(%p %lu %p %lu %p 0x%lx)\n",
+          dnDevInst, ResourceID, ResourceData, ResourceLen,
+          pbConflictDetected, ulFlags);
+
+    return CM_Detect_Resource_Conflict_Ex(dnDevInst,
+                                          ResourceID,
+                                          ResourceData,
+                                          ResourceLen,
+                                          pbConflictDetected,
+                                          ulFlags,
+                                          NULL);
+}
+
+
+/***********************************************************************
+ * CM_Detect_Resource_Conflict_Ex [SETUPAPI.@]
+ */
+CONFIGRET
+WINAPI
+CM_Detect_Resource_Conflict_Ex(
+    _In_ DEVINST dnDevInst,
+    _In_ RESOURCEID ResourceID,
+    _In_reads_bytes_(ResourceLen) PCVOID ResourceData,
+    _In_ ULONG ResourceLen,
+    _Out_ PBOOL pbConflictDetected,
+    _In_ ULONG ulFlags,
+    _In_opt_ HMACHINE hMachine)
+{
+    FIXME("CM_Detect_Resource_Conflict_Ex(%p %lu %p %lu %p 0x%lx %p)\n",
+          dnDevInst, ResourceID, ResourceData, ResourceLen,
+          pbConflictDetected, ulFlags, hMachine);
+
+    return CR_CALL_NOT_IMPLEMENTED;
+}
+
+
 /***********************************************************************
  * CM_Disable_DevNode [SETUPAPI.@]
  */
diff --git a/dll/win32/setupapi/setupapi.spec b/dll/win32/setupapi/setupapi.spec
index e43a8dbe986..527f4fd42b7 100644
--- a/dll/win32/setupapi/setupapi.spec
+++ b/dll/win32/setupapi/setupapi.spec
@@ -28,8 +28,8 @@
 @ stdcall CM_Delete_DevNode_Key(long long long)
 @ stdcall CM_Delete_DevNode_Key_Ex(long long long ptr)
 @ stdcall CM_Delete_Range(int64 int64 ptr long)
-@ stub CM_Detect_Resource_Conflict
-@ stub CM_Detect_Resource_Conflict_Ex
+@ stdcall CM_Detect_Resource_Conflict(long long ptr long ptr long)
+@ stdcall CM_Detect_Resource_Conflict_Ex(long long ptr long ptr long ptr)
 @ stdcall CM_Disable_DevNode(long long)
 @ stdcall CM_Disable_DevNode_Ex(long long ptr)
 @ stdcall CM_Disconnect_Machine(ptr)