diff --git a/src/swcio.cpp b/src/swcio.cpp
index 129f70afe97cf6a1ca78475205f3d4ac75c54e78..63eae66d5dd07ed1ccae74cc686c0d3e07977475 100644
--- a/src/swcio.cpp
+++ b/src/swcio.cpp
@@ -86,9 +86,10 @@ bool starts_with(const std::string &str, const std::string &prefix)
 
 void check_parse_status(const std::istream &is)
 {
-    if (is.fail())
+    if (is.fail()) {
         // If we try to read past the eof; fail bit will also be set
         throw swc_parse_error("could not parse value");
+    }
 }
 
 template<typename T>