diff --git a/src/common.h b/src/common.h
index 87d5005..d064dc5 100644
--- a/src/common.h
+++ b/src/common.h
@@ -1,7 +1,9 @@
 #ifndef COMMON_H_
 #define COMMON_H_
 
+#include <stdarg.h>
 #include <stdint.h>
+#include <stdio.h>
 #include <time.h>
 
 #define __DCURL_MAJOR__ 0
@@ -10,6 +12,15 @@
 
 double diff_in_second(struct timespec t1, struct timespec t2);
 
+static inline void ddprintf(const char *format, ...) {
+#if defined(ENABLE_DEBUG)
+    va_list ap;
+    va_start(ap, format);
+    vprintf(format, ap);
+    va_end(ap);
+#endif
+}
+
 typedef struct _pow_info PoW_Info;
 
 struct _pow_info {
diff --git a/src/implcontext.c b/src/implcontext.c
index d09dbc3..711f884 100644
--- a/src/implcontext.c
+++ b/src/implcontext.c
@@ -14,12 +14,10 @@ bool registerImplContext(ImplContext *impl_ctx)
 bool initializeImplContext(ImplContext *impl_ctx)
 {
     bool res = impl_ctx->initialize(impl_ctx);
-#if defined(ENABLE_DEBUG)
     if (res) {
-        printf(MSG_PREFIX "Implementation %s is initialized successfully\n",
-               impl_ctx->description);
+        ddprintf(MSG_PREFIX "Implementation %s is initialized successfully\n",
+                impl_ctx->description);
     }
-#endif
     return res;
 }