diff --git a/spec/mutex_spec.lua b/spec/mutex_spec.lua
index 8ee5640..c3e1524 100644
--- a/spec/mutex_spec.lua
+++ b/spec/mutex_spec.lua
@@ -40,8 +40,12 @@ describe("tests related to mutexes", function()
             :description "Print additional debug information. "
       )
 
-      assert.has_error(function() parser:parse{"-qv"} end, "option '-v' can not be used together with option '-q'")
-      assert.has_error(function() parser:parse{"-v", "--quiet"} end, "option '--quiet' can not be used together with option '-v'")
+      assert.has_error(function()
+         parser:parse{"-qv"}
+      end, "option '-v' can not be used together with option '-q'")
+      assert.has_error(function()
+         parser:parse{"-v", "--quiet"}
+      end, "option '--quiet' can not be used together with option '-v'")
    end)
 
    it("handles multiple mutexes", function()
@@ -75,6 +79,8 @@ describe("tests related to mutexes", function()
 
       local args = parser:parse{"install", "-l"}
       assert.same({install = true, ["local"] = true}, args)
-      assert.has_error(function() parser:parse{"install", "-qlv"} end, "option '-v' can not be used together with option '-q'")
+      assert.has_error(function()
+         parser:parse{"install", "-qlv"}
+      end, "option '-v' can not be used together with option '-q'")
    end)
 end)
diff --git a/spec/options_spec.lua b/spec/options_spec.lua
index 31363e8..5ad897f 100644
--- a/spec/options_spec.lua
+++ b/spec/options_spec.lua
@@ -275,13 +275,17 @@ describe("tests related to options", function()
       it("handles too many arguments correctly", function()
          local parser = Parser()
          parser:option "-s" "--server"
-         assert.has_error(function() parser:parse{"-sfoo", "bar"} end, "too many arguments")
+         assert.has_error(function()
+            parser:parse{"-sfoo", "bar"}
+         end, "too many arguments")
       end)
 
       it("doesn't accept GNU-like long options when it doesn't need arguments", function()
          local parser = Parser()
          parser:flag "-q" "--quiet"
-         assert.has_error(function() parser:parse{"--quiet=very_quiet"} end, "option '--quiet' does not take arguments")
+         assert.has_error(function()
+            parser:parse{"--quiet=very_quiet"}
+         end, "option '--quiet' does not take arguments")
       end)
 
       it("handles too many invocations correctly", function()
@@ -290,7 +294,9 @@ describe("tests related to options", function()
             count = 1,
             overwrite = false
          }
-         assert.has_error(function() parser:parse{"-qq"} end, "option '-q' must be used 1 time")
+         assert.has_error(function()
+            parser:parse{"-qq"}
+         end, "option '-q' must be used 1 time")
       end)
 
       it("handles too few invocations correctly", function()
@@ -298,8 +304,12 @@ describe("tests related to options", function()
          parser:option "-f" "--foo" {
             count = "3-4"
          }
-         assert.has_error(function() parser:parse{"-fFOO", "--foo=BAR"} end, "option '--foo' must be used at least 3 times")
-         assert.has_error(function() parser:parse{} end, "missing option '-f'")
+         assert.has_error(function()
+            parser:parse{"-fFOO", "--foo=BAR"}
+         end, "option '--foo' must be used at least 3 times")
+         assert.has_error(
+            function() parser:parse{}
+         end, "missing option '-f'")
       end)
    end)
 end)
diff --git a/src/argparse.lua b/src/argparse.lua
index 53ef173..60938fd 100644
--- a/src/argparse.lua
+++ b/src/argparse.lua
@@ -827,7 +827,8 @@ function ElementState:invoke(alias)
       if self.element._overwrite then
          self.overwrite = true
       else
-         self:error("%s must be used %s", self.name, bound("time", self.element._mincount, self.element._maxcount, true))
+         local num_times_repr = bound("time", self.element._mincount, self.element._maxcount, true)
+         self:error("%s must be used %s", self.name, num_times_repr)
       end
    else
       self.invocations = self.invocations + 1