diff --git a/src/lib/testu01/genode_chrono.cc b/src/lib/testu01/genode_chrono.cc
index fa96982..fd7814a 100644
--- a/src/lib/testu01/genode_chrono.cc
+++ b/src/lib/testu01/genode_chrono.cc
@@ -1,12 +1,24 @@
-#include <timer_session/connection.h>
+#include <genode_init.h>
 #include <base/printf.h>
 
+Genode::Allocator *_heap = nullptr;
+Timer::Connection *_timer = nullptr;
+
+
+void testu01_init(Genode::Allocator &heap, Timer::Connection &timer)
+{
+	_heap = &heap;
+	_timer = &timer;
+}
+
+
 /* XXX: should be the CPU session time, but the timer works for now */
 static void Heure (unsigned long *tsec, unsigned long *tusec)
 {
-	static Timer::Connection timer;
+	if (!_timer)
+		Genode::error("library not initialized with 'testu01_init'!");
 
-	unsigned long ms = timer.elapsed_ms();
+	unsigned long ms = _timer->elapsed_ms();
 
 	*tsec = ms / 1000;
 	*tusec = ms * 1000;
@@ -25,13 +37,16 @@ void chrono_Init (chrono_Chrono *C) {
 
 chrono_Chrono * chrono_Create (void)
 {
-	chrono_Chrono *C  = new (Genode::env()->heap()) chrono_Chrono;
+	if (!_heap)
+		Genode::error("library not initialized with 'testu01_init'!");
+
+	chrono_Chrono *C  = new (*_heap) chrono_Chrono;
 	Heure(&C->second, &C->microsec);
 	return C;
 }
 
 
-void chrono_Delete (chrono_Chrono *C) { destroy(Genode::env()->heap(), C); }
+void chrono_Delete (chrono_Chrono *C) { destroy(*_heap, C); }
 
 
 double chrono_Val (chrono_Chrono *C, chrono_TimeFormat Unit)
diff --git a/src/lib/testu01/genode_gdef.cc b/src/lib/testu01/genode_gdef.cc
index 880d46b..2fc9613 100644
--- a/src/lib/testu01/genode_gdef.cc
+++ b/src/lib/testu01/genode_gdef.cc
@@ -7,9 +7,7 @@ extern "C" {
 
 void gdef_GetHostName (char machine[], int n)
 {
-	Genode::Attached_rom_dataspace config("config");
-	try { config.xml().attribute("hostname").value(machine, n); }
-	catch (...) { Genode::strncpy(machine, "genode", n); }
+	if (n) *machine = '\0';
 }
 
 void gdef_WriteHostName (void) { }
diff --git a/src/test/testu01_alphabit/main.cc b/src/test/testu01_alphabit/main.cc
index 5afd2f0..e98ee30 100644
--- a/src/test/testu01_alphabit/main.cc
+++ b/src/test/testu01_alphabit/main.cc
@@ -1,5 +1,8 @@
+#include <testu01/genode_init.h>
+
 #include <base/attached_rom_dataspace.h>
 #include <libc/component.h>
+#include <base/heap.h>
 #include <base/log.h>
 
 extern "C" {
@@ -30,7 +33,13 @@ void Libc::Component::construct(Libc::Env &env)
 		return;
 	}
 
-	bbattery_AlphabitFile((char *)file.string(), nbits);
+	Heap heap(env.pd(), env.rm());
+	Timer::Connection timer(env);
+
+	testu01_init(heap, timer);
+
+	Libc::with_libc([&] () {
+		bbattery_AlphabitFile((char *)file.string(), nbits); });
 
 	env.parent().exit(0);
 }
diff --git a/src/test/testu01_alphabit/target.mk b/src/test/testu01_alphabit/target.mk
index a46a2b9..4d63a78 100644
--- a/src/test/testu01_alphabit/target.mk
+++ b/src/test/testu01_alphabit/target.mk
@@ -1,3 +1,3 @@
-TARGET = testu01_alphabet
+TARGET = testu01_alphabit
 LIBS  += testu01 libc libm
 SRC_CC = main.cc
diff --git a/src/test/testu01_rabbit/main.cc b/src/test/testu01_rabbit/main.cc
index 9df09f4..8c921b7 100644
--- a/src/test/testu01_rabbit/main.cc
+++ b/src/test/testu01_rabbit/main.cc
@@ -1,5 +1,8 @@
+#include <testu01/genode_init.h>
+
 #include <base/attached_rom_dataspace.h>
 #include <libc/component.h>
+#include <base/heap.h>
 #include <base/log.h>
 
 extern "C" {
@@ -36,7 +39,13 @@ void Libc::Component::construct(Libc::Env &env)
 		return;
 	}
 
-	bbattery_RabbitFile((char *)file.string(), nbits);
+	Heap heap(env.pd(), env.rm());
+	Timer::Connection timer(env);
+
+	testu01_init(heap, timer);
+
+	Libc::with_libc([&] () {
+		bbattery_RabbitFile((char *)file.string(), nbits); });
 
 	env.parent().exit(0);
 }