diff --git a/src/logging/writers/ElasticSearch.cc b/src/logging/writers/ElasticSearch.cc
index 2da79ed7b9..cc6f8b1c4f 100644
--- a/src/logging/writers/ElasticSearch.cc
+++ b/src/logging/writers/ElasticSearch.cc
@@ -359,10 +359,10 @@ CURL* ElasticSearch::HTTPSetup()
 	return handle;
 	}
 
-bool ElasticSearch::HTTPReceive(void* ptr, int size, int nmemb, void* userdata)
+size_t ElasticSearch::HTTPReceive(void* ptr, int size, int nmemb, void* userdata)
 	{
 	//TODO: Do some verification on the result?
-	return true;
+	return size;
 	}
 
 bool ElasticSearch::HTTPSend(CURL *handle)
diff --git a/src/logging/writers/ElasticSearch.h b/src/logging/writers/ElasticSearch.h
index 0d863f2f19..0e88bf3e88 100644
--- a/src/logging/writers/ElasticSearch.h
+++ b/src/logging/writers/ElasticSearch.h
@@ -45,7 +45,7 @@ private:
 	bool UpdateIndex(double now, double rinterval, double rbase);
 
 	CURL* HTTPSetup();
-	bool HTTPReceive(void* ptr, int size, int nmemb, void* userdata);
+	size_t HTTPReceive(void* ptr, int size, int nmemb, void* userdata);
 	bool HTTPSend(CURL *handle);
 
 	// Buffers, etc.