diff --git a/reactos/tools/sysreg/pipe_reader.cpp b/reactos/tools/sysreg/pipe_reader.cpp
index 238439a5b9c..862a39470db 100644
--- a/reactos/tools/sysreg/pipe_reader.cpp
+++ b/reactos/tools/sysreg/pipe_reader.cpp
@@ -95,6 +95,7 @@ namespace System_
 			free(buf);
 			return false;
 		}
+		fflush(m_File);
 		string line(buf);
 		lines.push_back(line);
 		return true;