diff --git a/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/client.rb b/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/client.rb
index d1c28022f..ffb69973f 100644
--- a/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/client.rb
+++ b/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/client.rb
@@ -10,7 +10,7 @@ module Gruf
       module Interceptors
         class Client < ::Gruf::Interceptors::ClientInterceptor
           def call(request_context:)
-            return yield if instrumentation_config.blank?
+            return yield if instrumentation_config.empty?
 
             service = request_context.method.split('/')[1]
             method = request_context.method_name
diff --git a/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/server.rb b/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/server.rb
index 5609d9c63..fec68f357 100644
--- a/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/server.rb
+++ b/instrumentation/gruf/lib/opentelemetry/instrumentation/gruf/interceptors/server.rb
@@ -10,7 +10,7 @@ module Gruf
       module Interceptors
         class Server < ::Gruf::Interceptors::ServerInterceptor
           def call
-            return yield if instrumentation_config.blank?
+            return yield if instrumentation_config.empty?
 
             method = request.method_name