diff --git a/echrono/Steady.cpp b/echrono/Steady.cpp
index ba8cefd..acc792a 100644
--- a/echrono/Steady.cpp
+++ b/echrono/Steady.cpp
@@ -16,7 +16,7 @@ ETK_DECLARE_TYPE(echrono::Steady);
 static int64_t getTime() {
 	#if defined(__TARGET_OS__Android)
 		struct timevalnow;
-		gettimeofday(&now, nullptr);
+		gettimeofday(&now, null);
 		return int64_t(now.tv_sec)*1000000000LL + int64_t(now.tv_usec)*1000LL;
 	#elif    defined(__TARGET_OS__Web) \
 	      || defined(__TARGET_OS__Linux) \
@@ -31,7 +31,7 @@ static int64_t getTime() {
 		#endif
 		if (ret != 0) {
 			// Error to get the time ...
-			now.tv_sec = time(nullptr);
+			now.tv_sec = time(null);
 			now.tv_nsec = 0;
 		}
 		return int64_t(now.tv_sec)*1000000000LL + int64_t(now.tv_nsec);
diff --git a/echrono/Time.cpp b/echrono/Time.cpp
index dacc6bc..4641f15 100644
--- a/echrono/Time.cpp
+++ b/echrono/Time.cpp
@@ -19,7 +19,7 @@ ETK_DECLARE_TYPE(echrono::Time);
 static int64_t getTime() {
 	#if defined(__TARGET_OS__Android)
 		struct timevalnow;
-		gettimeofday(&now, nullptr);
+		gettimeofday(&now, null);
 		return int64_t(now.tv_sec)*1000000000LL + int64_t(now.tv_usec)*1000LL;
 	#elif    defined(__TARGET_OS__Web) \
 	      || defined(__TARGET_OS__Linux) \
@@ -30,7 +30,7 @@ static int64_t getTime() {
 		int ret = clock_gettime(CLOCK_REALTIME, &now);
 		if (ret != 0) {
 			// Error to get the time ...
-			now.tv_sec = time(nullptr);
+			now.tv_sec = time(null);
 			now.tv_nsec = 0;
 		}
 		return int64_t(now.tv_sec)*1000000000LL + int64_t(now.tv_nsec);
diff --git a/lutin_echrono.py b/lutin_echrono.py
index 32f56b4..61a8754 100644
--- a/lutin_echrono.py
+++ b/lutin_echrono.py
@@ -47,7 +47,7 @@ def configure(target, my_module):
 	# name of the dependency
 	my_module.add_depend([
 	    'elog',
-	    'etk',
+	    'etk-base',
 	    ])
 	
 	my_module.add_path(".")