diff --git a/source/shared/core_stmt.cpp b/source/shared/core_stmt.cpp
index 1a1fe359..c12f7c99 100644
--- a/source/shared/core_stmt.cpp
+++ b/source/shared/core_stmt.cpp
@@ -734,7 +734,7 @@ SQLRETURN core_sqlsrv_execute( sqlsrv_stmt* stmt TSRMLS_DC, const char* sql, int
         // if the statement executed but failed in a subsequent operation before returning, 
         // we need to cancel the statement and deref the output and stream parameters
         if ( stmt->send_streams_at_exec ) {
-            zend_hash_clean( Z_ARRVAL( stmt->output_params ));
+            finalize_output_parameters( stmt TSRMLS_CC );
             zend_hash_clean( Z_ARRVAL( stmt->param_streams ));
         }
         if( stmt->executed ) {
diff --git a/test/pdo_sqlsrv/pdo_378_out_param_error.phpt b/test/pdo_sqlsrv/pdo_378_out_param_error.phpt
new file mode 100644
index 00000000..2bec70ed
--- /dev/null
+++ b/test/pdo_sqlsrv/pdo_378_out_param_error.phpt
@@ -0,0 +1,60 @@
+--TEST--
+This test verifies that GitHub issue #378 is fixed in pdo_sqlsrv.
+--DESCRIPTION--
+GitHub issue #378 - output parameters appends garbage info when variable is initialized with different data type
+steps to reproduce the issue:
+1- create a store procedure with print and output parameter
+2- initialize output parameters to a different data type other than the type declared in sp.
+3 - call sp.
+--FILE--
+<?php
+require_once("pdo_tools.inc");
+require_once("autonomous_setup.php");
+
+$conn = new PDO( "sqlsrv:Server=$serverName; Database = tempdb ", $username, $password);
+if (!$conn) {
+	print_r($conn->errorInfo());
+}
+
+//----------------Main---------------------------
+$procName = GetTempProcName();
+createSP($conn, $procName);
+executeSP($conn, $procName);
+$conn->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );
+executeSP($conn, $procName);
+echo "Done";
+
+//-------------------functions-------------------
+function createSP($conn, $procName){
+	
+	$sp_sql="create proc $procName @p1 integer, @p2 integer, @p3 integer output
+	as
+	begin
+		select @p3 = @p1 + @p2
+		print @p3
+	end
+	";
+	$stmt = $conn->exec($sp_sql);
+	if ($stmt === false) { print("Failed to create stored procedure"); }
+}
+
+function executeSP($conn, $procName){
+	$expected = 3;
+	$stmt = $conn->prepare("{call $procName( ?, ?, ? )}");
+	$stmt->bindParam(1, $v1);
+	$stmt->bindParam(2, $v2);
+	$stmt->bindParam(3, $v3, PDO::PARAM_INT, 10);
+	$v1 = 1;
+	$v2 = 2;
+	$v3 = 'str';
+	$stmt->execute();
+	if (!$stmt) {
+        	print_r($stmt->errorInfo());
+        }
+	if ( $v3 != $expected ) {
+		print("The expected value is $expected, actual value is $v3\n");
+	}
+}
+?>
+--EXPECT--
+Done
diff --git a/test/sqlsrv/sqlsrv_378_out_param_error.phpt b/test/sqlsrv/sqlsrv_378_out_param_error.phpt
new file mode 100644
index 00000000..4f5d9c04
--- /dev/null
+++ b/test/sqlsrv/sqlsrv_378_out_param_error.phpt
@@ -0,0 +1,58 @@
+--TEST--
+This test verifies that GitHub issue #378 is fixed.
+--DESCRIPTION--
+GitHub issue #378 - output parameters appends garbage info when variable is initialized with different data type
+steps to reproduce the issue:
+1- create a store procedure with print and output parameter
+2- initialize output parameters to a different data type other than the type declared in sp.
+3- set the WarningsReturnAsErrors to true
+4 - call sp.
+--FILE--
+<?php
+require_once("tools.inc");
+require_once("autonomous_setup.php");
+
+$conn = sqlsrv_connect($serverName, $connectionInfo);
+if( $conn === false ) {
+    die( print_r( sqlsrv_errors(), true ));
+}
+//----------------Main---------------------------
+$procName = GetTempProcName();
+createSP($conn, $procName);
+
+sqlsrv_configure( 'WarningsReturnAsErrors', true );
+executeSP($conn, $procName);
+
+sqlsrv_configure( 'WarningsReturnAsErrors', false );
+executeSP($conn, $procName);
+echo "Done";
+//-------------------functions-------------------
+function createSP($conn, $procName){
+	
+	$sp_sql="create proc $procName @p1 integer, @p2 integer, @p3 integer output
+	as
+	begin
+		select @p3 = @p1 + @p2
+		print @p3
+	end
+	";
+	$stmt = sqlsrv_query($conn, $sp_sql);
+	if ($stmt === false) { FatalError("Failed to create stored procedure"); }
+}
+
+function executeSP($conn, $procName){
+	$expected = 3;
+	$v1 = 1;
+	$v2 = 2;
+	$v3 = 'str';
+	$stmt = sqlsrv_query( $conn, "{call $procName( ?, ?, ? )}", array( $v1, $v2, array( &$v3, SQLSRV_PARAM_OUT )));
+	if( $stmt === false ) {
+		print_r( sqlsrv_errors(), true );
+	}
+	if ( $v3 != $expected ) {
+		FatalError("The expected value is $expected, actual value is $v3\n");
+	}
+}
+?>
+--EXPECT--
+Done
\ No newline at end of file