diff --git a/lib/aruba/matchers/file/be_a_command_found_in_path.rb b/lib/aruba/matchers/file/be_a_command_found_in_path.rb
index b8f78a1ca..91d2b2219 100644
--- a/lib/aruba/matchers/file/be_a_command_found_in_path.rb
+++ b/lib/aruba/matchers/file/be_a_command_found_in_path.rb
@@ -19,15 +19,13 @@
   end
 
   failure_message do |actual|
-    format(
-      %(expected that command "%s" can be found in PATH "#{aruba.environment['PATH']}".), actual
-    )
+    format(%(expected that command "%s" can be found in PATH "%s".),
+           actual, aruba.environment["PATH"])
   end
 
   failure_message_when_negated do |actual|
-    format(
-      %(expected that command "%s" cannot be found in PATH "#{aruba.environment['PATH']}".), actual
-    )
+    format(%(expected that command "%s" cannot be found in PATH "%s".),
+           actual, aruba.environment["PATH"])
   end
 end