diff --git a/api/include/opentelemetry/trace/default_span.h b/api/include/opentelemetry/trace/default_span.h
index ff5411e82b..aeba36ef30 100644
--- a/api/include/opentelemetry/trace/default_span.h
+++ b/api/include/opentelemetry/trace/default_span.h
@@ -4,6 +4,7 @@
 #include "opentelemetry/trace/canonical_code.h"
 #include "opentelemetry/common/attribute_value.h"
 #include "opentelemetry/trace/span.h"
+#include "opentelemetry/trace/default_tracer.h"
 
 #define pass
 OPENTELEMETRY_BEGIN_NAMESPACE