diff --git a/src/ifcconvert/IfcConvert.cpp b/src/ifcconvert/IfcConvert.cpp
index ca4fc26490..f164dc9c9d 100644
--- a/src/ifcconvert/IfcConvert.cpp
+++ b/src/ifcconvert/IfcConvert.cpp
@@ -178,7 +178,10 @@ bool init_input_file(const std::string& filename, IfcParse::IfcFile*& ifc_file,
 
 // from https://stackoverflow.com/questions/31696328/boost-program-options-using-zero-parameter-options-multiple-times
 struct verbosity_counter {
-	int count = 0;
+	int count;
+	verbosity_counter(int c = 0) {
+		count = c;
+	}
 };
 
 #if defined(_MSC_VER) && defined(_UNICODE)