diff --git a/src/spectator/example_group.cr b/src/spectator/example_group.cr
index 872ca80..308ad91 100644
--- a/src/spectator/example_group.cr
+++ b/src/spectator/example_group.cr
@@ -17,11 +17,11 @@ module Spectator
     end
 
     def examples : Enumerable(Example)
-      children.compact_map { |child| child.as?(Example) }
+      children.compact_map &.as?(Example)
     end
 
     def groups : Enumerable(ExampleGroup)
-      children.compact_map { |child| child.as?(ExampleGroup) }
+      children.compact_map &.as?(ExampleGroup)
     end
 
     def example_count
diff --git a/src/spectator/example_hooks.cr b/src/spectator/example_hooks.cr
index 488a754..3f35c8d 100644
--- a/src/spectator/example_hooks.cr
+++ b/src/spectator/example_hooks.cr
@@ -20,19 +20,19 @@ module Spectator
     end
 
     def run_before_all
-      @before_all.each(&.call)
+      @before_all.each &.call
     end
 
     def run_before_each
-      @before_each.each(&.call)
+      @before_each.each &.call
     end
 
     def run_after_all
-      @after_all.each(&.call)
+      @after_all.each &.call
     end
 
     def run_after_each
-      @after_each.each(&.call)
+      @after_each.each &.call
     end
 
     def wrap_around_each(&block : ->)
diff --git a/src/spectator/test_results.cr b/src/spectator/test_results.cr
index aa37b9f..bf7f1ef 100644
--- a/src/spectator/test_results.cr
+++ b/src/spectator/test_results.cr
@@ -37,7 +37,7 @@ module Spectator
     end
 
     def example_runtime
-      @results.map { |result| result.elapsed }.sum
+      @results.map(&.elapsed).sum
     end
 
     def overhead_time