diff --git a/ndn-cpp/c/util/blob.h b/ndn-cpp/c/util/blob.h
index 06dbce1..18bcd03 100644
--- a/ndn-cpp/c/util/blob.h
+++ b/ndn-cpp/c/util/blob.h
@@ -7,6 +7,8 @@
 #ifndef NDN_BLOB_H
 #define	NDN_BLOB_H
 
+#include <ndn-cpp/c/common.h>
+
 #ifdef	__cplusplus
 extern "C" {
 #endif
diff --git a/ndn-cpp/c/util/crypto.h b/ndn-cpp/c/util/crypto.h
index 5bec549..586108b 100644
--- a/ndn-cpp/c/util/crypto.h
+++ b/ndn-cpp/c/util/crypto.h
@@ -9,7 +9,7 @@
 
 #include <openssl/ssl.h>
 #include <openssl/rsa.h>
-#include "../common.h"
+#include <ndn-cpp/c/common.h>
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/ndn-cpp/c/util/ndn_memory.h b/ndn-cpp/c/util/ndn_memory.h
index 9d23e2d..bdf6341 100644
--- a/ndn-cpp/c/util/ndn_memory.h
+++ b/ndn-cpp/c/util/ndn_memory.h
@@ -11,7 +11,7 @@
 #ifndef NDN_MEMORY_H
 #define NDN_MEMORY_H
 
-#include "../common.h"
+#include <ndn-cpp/c/common.h>
 
 #ifdef __cplusplus
 extern "C" {