diff --git a/src/ifcparse/IfcParse.cpp b/src/ifcparse/IfcParse.cpp
index ee6bccfee6..51d344033b 100644
--- a/src/ifcparse/IfcParse.cpp
+++ b/src/ifcparse/IfcParse.cpp
@@ -168,6 +168,7 @@ IfcSpfStream::IfcSpfStream(const std::string& fn)
 		eof = len == 0;
 		ptr = 0;
 		fclose(stream);
+		stream = nullptr;
 #ifdef USE_MMAP	
 	}
 #endif