diff --git a/core/processor/inner/ProcessorMergeMultilineLogNative.cpp b/core/processor/inner/ProcessorMergeMultilineLogNative.cpp
index 6eafd261ff..da8dfc3ce0 100644
--- a/core/processor/inner/ProcessorMergeMultilineLogNative.cpp
+++ b/core/processor/inner/ProcessorMergeMultilineLogNative.cpp
@@ -94,7 +94,6 @@ void ProcessorMergeMultilineLogNative::Process(PipelineEventGroup& logGroup) {
         logGroup.DelMetadata(EventGroupMetaKey::HAS_PART_LOG);
     }
     *mSplitLines = logGroup.GetEvents().size();
-    return;
 }
 
 bool ProcessorMergeMultilineLogNative::IsSupportedEvent(const PipelineEventPtr& e) const {
diff --git a/core/processor/inner/ProcessorSplitLogStringNative.cpp b/core/processor/inner/ProcessorSplitLogStringNative.cpp
index 79a9eb874c..8df6af83f9 100644
--- a/core/processor/inner/ProcessorSplitLogStringNative.cpp
+++ b/core/processor/inner/ProcessorSplitLogStringNative.cpp
@@ -83,8 +83,6 @@ void ProcessorSplitLogStringNative::Process(PipelineEventGroup& logGroup) {
     }
     *mSplitLines = newEvents.size();
     logGroup.SwapEvents(newEvents);
-
-    return;
 }
 
 bool ProcessorSplitLogStringNative::IsSupportedEvent(const PipelineEventPtr& e) const {
diff --git a/core/processor/inner/ProcessorSplitMultilineLogStringNative.cpp b/core/processor/inner/ProcessorSplitMultilineLogStringNative.cpp
index 10a919355b..d863844a65 100644
--- a/core/processor/inner/ProcessorSplitMultilineLogStringNative.cpp
+++ b/core/processor/inner/ProcessorSplitMultilineLogStringNative.cpp
@@ -92,6 +92,7 @@ void ProcessorSplitMultilineLogStringNative::Process(PipelineEventGroup& logGrou
     }
     mProcMatchedLinesCnt->Add(inputLines - unmatchLines);
     mProcUnmatchedLinesCnt->Add(unmatchLines);
+    *mSplitLines = newEvents.size();
     logGroup.SwapEvents(newEvents);
 }