diff --git a/src/utils/command.rs b/src/utils/command.rs
index e48e416d..6c8dc8a0 100644
--- a/src/utils/command.rs
+++ b/src/utils/command.rs
@@ -300,6 +300,8 @@ where
     Some((command, words.collect()))
 }
 
+// The rest of tests are integrational due to problems with macro expansion in
+// unit tests.
 #[cfg(test)]
 mod tests {
     use super::*;