diff --git a/lib/rspec/matchers/dsl.rb b/lib/rspec/matchers/dsl.rb
index bf4189e4d..f1b43fc14 100644
--- a/lib/rspec/matchers/dsl.rb
+++ b/lib/rspec/matchers/dsl.rb
@@ -537,12 +537,12 @@ def override_custom_matcher_method(klass, name)
         end
 
         def check_method_call_count
-          if (@call_count -= 1) > 0
-            RSpec.warning(
-              "The custom matcher `#{name}` or its negated method is called " \
+          return if (@call_count -= 1) == 0
+
+          RSpec.warning(
+            "The custom matcher `#{name}` or its negated method is called " \
                'more than once in the test expectations without using `and` or `or`'
-            )
-          end
+          )
         end
 
         def actual_arg_for(block)