diff --git a/tests/parametric/test_128_bit_traceids.py b/tests/parametric/test_128_bit_traceids.py
index f3da39b0e3f..1238375f9ac 100644
--- a/tests/parametric/test_128_bit_traceids.py
+++ b/tests/parametric/test_128_bit_traceids.py
@@ -215,7 +215,7 @@ def test_datadog_128_bit_generation_enabled_by_default(self, test_agent, test_li
     @missing_feature(context.library == "ruby", reason="not implemented")
     @pytest.mark.parametrize(
         "library_env",
-        [{"DD_TRACE_PROPAGATION_STYLE": "B3 single header", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "false"}],
+        [{"DD_TRACE_PROPAGATION_STYLE": "b3", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "false"}],
     )
     def test_b3single_128_bit_propagation(self, test_agent, test_library):
         """Ensure that external 128-bit TraceIds are properly propagated in B3
@@ -238,7 +238,7 @@ def test_b3single_128_bit_propagation(self, test_agent, test_library):
     @missing_feature(context.library == "ruby", reason="not implemented")
     @pytest.mark.parametrize(
         "library_env",
-        [{"DD_TRACE_PROPAGATION_STYLE": "B3 single header", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "true"}],
+        [{"DD_TRACE_PROPAGATION_STYLE": "b3", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "true"}],
     )
     def test_b3single_128_bit_propagation_and_generation(self, test_agent, test_library):
         """Ensure that a new span from incoming headers does not modify the trace id when generation is true."""
@@ -259,7 +259,7 @@ def test_b3single_128_bit_propagation_and_generation(self, test_agent, test_libr
     )
     @pytest.mark.parametrize(
         "library_env",
-        [{"DD_TRACE_PROPAGATION_STYLE": "B3 single header", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "false"}],
+        [{"DD_TRACE_PROPAGATION_STYLE": "b3", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "false"}],
     )
     def test_b3single_128_bit_generation_disabled(self, test_agent, test_library):
         """Ensure that 64-bit TraceIds are properly generated, propagated in B3
@@ -276,7 +276,7 @@ def test_b3single_128_bit_generation_disabled(self, test_agent, test_library):
     @missing_feature(context.library == "ruby", reason="not implemented")
     @pytest.mark.parametrize(
         "library_env",
-        [{"DD_TRACE_PROPAGATION_STYLE": "B3 single header", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "true"}],
+        [{"DD_TRACE_PROPAGATION_STYLE": "b3", "DD_TRACE_128_BIT_TRACEID_GENERATION_ENABLED": "true"}],
     )
     def test_b3single_128_bit_generation_enabled(self, test_agent, test_library):
         """Ensure that 128-bit TraceIds are properly generated, propagated in B3