diff --git a/clap-tests/run_tests.py b/clap-tests/run_tests.py
index 921eacdd..ae913a9a 100755
--- a/clap-tests/run_tests.py
+++ b/clap-tests/run_tests.py
@@ -73,7 +73,7 @@ USAGE:
 
 For more information try --help'''
 
-_excluded_l = '''error: The argument '-f' cannot be used '-F'
+_excluded_l = '''error: The argument '-f' cannot be used with '-F'
 
 USAGE:
 	claptests [positional2] -F --long-option-2 <option2>
diff --git a/src/app/app.rs b/src/app/app.rs
index 579347e0..17ab16cb 100644
--- a/src/app/app.rs
+++ b/src/app/app.rs
@@ -3306,7 +3306,7 @@ impl<'a, 'v, 'ab, 'u, 'h, 'ar> App<'a, 'v, 'ab, 'u, 'h, 'ar>{
             // Ensure this flag isn't on the mutually excludes list
             if self.blacklist.contains(&v.name) {
                 matches.args.remove(v.name);
-                return Err(self.report_error(format!("The argument '{}' cannot be used {}",
+                return Err(self.report_error(format!("The argument '{}' cannot be used with {}",
                             Format::Warning(format!("-{}", arg)),
                         match self.blacklisted_from(v.name, matches) {
                             Some(name) => format!("'{}'", Format::Warning(name)),