diff --git a/library/libsds.h b/library/libsds.h
index aa2909a..1bc26a7 100644
--- a/library/libsds.h
+++ b/library/libsds.h
@@ -28,7 +28,7 @@ typedef void (*SdsCallBack) (int callerRet, const char* msg, size_t len, void* u
  * @param channelId A unique identifier for the communication channel.
  * @return An opaque handle (void*) representing the instance, or NULL on failure.
  */
-void* NewReliabilityManager(char* channelId);
+void* NewReliabilityManager(char* channelId, SdsCallBack callback, void* userData);
 
 
 #ifdef __cplusplus
diff --git a/library/libsds.nim b/library/libsds.nim
index 81e8362..767586c 100644
--- a/library/libsds.nim
+++ b/library/libsds.nim
@@ -108,7 +108,7 @@ proc initializeLibrary() {.exported.} =
 ### Exported procs
 
 proc NewReliabilityManager(
-    channelId: cstring, callback: SdsCallback, userData: pointer
+    channelId: cstring, callback: SdsCallBack, userData: pointer
 ): pointer {.dynlib, exportc, cdecl.} =
   initializeLibrary()