diff --git a/ddtrace/tracer/otel_dd_mappings.go b/ddtrace/tracer/otel_dd_mappings.go
index 4800c2e480..1b17d86560 100644
--- a/ddtrace/tracer/otel_dd_mappings.go
+++ b/ddtrace/tracer/otel_dd_mappings.go
@@ -89,16 +89,18 @@ func getDDorOtelConfig(configName string) string {
 
 	val := os.Getenv(config.dd)
 	if otVal := os.Getenv(config.ot); otVal != "" {
-		ddPrefix := "config.datadog:"
-		otelPrefix := "config.opentelemetry:"
+		ddPrefix := "config_datadog:"
+		otelPrefix := "config_opentelemetry:"
 		if val != "" {
 			log.Warn("Both %v and %v are set, using %v=%v", config.ot, config.dd, config.dd, val)
-			telemetry.GlobalClient.Count(telemetry.NamespaceTracers, "otel.env.hiding", 1.0, []string{ddPrefix + config.dd, otelPrefix + config.ot}, true)
+			telemetryTags := []string{ddPrefix + strings.ToLower(config.dd), otelPrefix + strings.ToLower(config.ot)}
+			telemetry.GlobalClient.Count(telemetry.NamespaceTracers, "otel.env.hiding", 1.0, telemetryTags, true)
 		} else {
 			v, err := config.remapper(otVal)
 			if err != nil {
 				log.Warn(err.Error())
-				telemetry.GlobalClient.Count(telemetry.NamespaceTracers, "otel.env.invalid", 1.0, []string{ddPrefix + config.dd, otelPrefix + config.ot}, true)
+				telemetryTags := []string{ddPrefix + strings.ToLower(config.dd), otelPrefix + strings.ToLower(config.ot)}
+				telemetry.GlobalClient.Count(telemetry.NamespaceTracers, "otel.env.invalid", 1.0, telemetryTags, true)
 			}
 			val = v
 		}
diff --git a/ddtrace/tracer/otel_dd_mappings_test.go b/ddtrace/tracer/otel_dd_mappings_test.go
index 1ecfb75149..3f85dffa50 100644
--- a/ddtrace/tracer/otel_dd_mappings_test.go
+++ b/ddtrace/tracer/otel_dd_mappings_test.go
@@ -36,7 +36,7 @@ func TestAssessSource(t *testing.T) {
 		t.Setenv("OTEL_SERVICE_NAME", "123")
 		v := getDDorOtelConfig("service")
 		assert.Equal(t, "abc", v)
-		telemetryClient.AssertCalled(t, "Count", telemetry.NamespaceTracers, "otel.env.hiding", 1.0, []string{"config.datadog:DD_SERVICE", "config.opentelemetry:OTEL_SERVICE_NAME"}, true)
+		telemetryClient.AssertCalled(t, "Count", telemetry.NamespaceTracers, "otel.env.hiding", 1.0, []string{"config_datadog:dd_service", "config_opentelemetry:otel_service_name"}, true)
 	})
 	t.Run("invalid-ot", func(t *testing.T) {
 		telemetryClient := new(telemetrytest.MockClient)
@@ -44,6 +44,6 @@ func TestAssessSource(t *testing.T) {
 		t.Setenv("OTEL_LOG_LEVEL", "nonesense")
 		v := getDDorOtelConfig("debugMode")
 		assert.Equal(t, "", v)
-		telemetryClient.AssertCalled(t, "Count", telemetry.NamespaceTracers, "otel.env.invalid", 1.0, []string{"config.datadog:DD_TRACE_DEBUG", "config.opentelemetry:OTEL_LOG_LEVEL"}, true)
+		telemetryClient.AssertCalled(t, "Count", telemetry.NamespaceTracers, "otel.env.invalid", 1.0, []string{"config_datadog:dd_trace_debug", "config_opentelemetry:otel_log_level"}, true)
 	})
 }