diff --git a/asn1_decoder.cpp b/asn1_decoder.cpp
index 7280f74..e7aef78 100644
--- a/asn1_decoder.cpp
+++ b/asn1_decoder.cpp
@@ -14,6 +14,7 @@
  * limitations under the License.
  */
 
+#include <malloc.h>
 #include <stdint.h>
 #include <string.h>