diff --git a/src/blocks/controlblocks.cpp b/src/blocks/controlblocks.cpp
index 9da72683..8d668a03 100644
--- a/src/blocks/controlblocks.cpp
+++ b/src/blocks/controlblocks.cpp
@@ -9,9 +9,12 @@
 #include <cassert>
 
 #include "controlblocks.h"
+#include "../engine/internal/clock.h"
 
 using namespace libscratchcpp;
 
+IClock *ControlBlocks::clock = nullptr;
+
 std::string ControlBlocks::name() const
 {
     return "Control";
@@ -207,14 +210,20 @@ unsigned int ControlBlocks::stopOtherScriptsInSprite(VirtualMachine *vm)
 
 unsigned int ControlBlocks::startWait(VirtualMachine *vm)
 {
-    auto currentTime = std::chrono::steady_clock::now();
+    if (!clock)
+        clock = Clock::instance().get();
+
+    auto currentTime = clock->currentSteadyTime();
     m_timeMap[vm] = { currentTime, vm->getInput(0, 1)->toDouble() * 1000 };
     return 1;
 }
 
 unsigned int ControlBlocks::wait(VirtualMachine *vm)
 {
-    auto currentTime = std::chrono::steady_clock::now();
+    if (!clock)
+        clock = Clock::instance().get();
+
+    auto currentTime = clock->currentSteadyTime();
     assert(m_timeMap.count(vm) == 1);
     if (std::chrono::duration_cast<std::chrono::milliseconds>(currentTime - m_timeMap[vm].first).count() >= m_timeMap[vm].second) {
         m_timeMap.erase(vm);
diff --git a/src/blocks/controlblocks.h b/src/blocks/controlblocks.h
index 92e63aaf..236ab87b 100644
--- a/src/blocks/controlblocks.h
+++ b/src/blocks/controlblocks.h
@@ -11,6 +11,7 @@ namespace libscratchcpp
 
 class Compiler;
 class VirtualMachine;
+class IClock;
 
 /*! \brief The ControlBlocks class contains the implementation of control blocks. */
 class ControlBlocks : public IBlockSection
@@ -69,6 +70,8 @@ class ControlBlocks : public IBlockSection
         static unsigned int deleteThisClone(VirtualMachine *vm);
 
         static inline std::unordered_map<VirtualMachine *, std::pair<std::chrono::steady_clock::time_point, int>> m_timeMap;
+
+        static IClock *clock;
 };
 
 } // namespace libscratchcpp
diff --git a/test/blocks/control_blocks_test.cpp b/test/blocks/control_blocks_test.cpp
index dab49c20..8ba068e0 100644
--- a/test/blocks/control_blocks_test.cpp
+++ b/test/blocks/control_blocks_test.cpp
@@ -5,11 +5,13 @@
 #include <scratchcpp/variable.h>
 #include <scratchcpp/sprite.h>
 #include <enginemock.h>
+#include <clockmock.h>
 
 #include "../common.h"
 #include "blocks/controlblocks.h"
 #include "blocks/operatorblocks.h"
 #include "engine/internal/engine.h"
+#include "engine/internal/clock.h"
 
 using namespace libscratchcpp;
 
@@ -732,6 +734,11 @@ TEST_F(ControlBlocksTest, WaitImpl)
     vm.setConstValues(constValues);
     vm.setBytecode(bytecode);
 
+    ClockMock clock;
+    ControlBlocks::clock = &clock;
+
+    std::chrono::steady_clock::time_point startTime(std::chrono::milliseconds(1000));
+    EXPECT_CALL(clock, currentSteadyTime()).Times(2).WillRepeatedly(Return(startTime));
     EXPECT_CALL(m_engineMock, lockFrame()).Times(1);
     EXPECT_CALL(m_engineMock, breakFrame()).Times(1);
     vm.run();
@@ -740,18 +747,20 @@ TEST_F(ControlBlocksTest, WaitImpl)
     ASSERT_TRUE(ControlBlocks::m_timeMap.find(&vm) != ControlBlocks::m_timeMap.cend());
     ASSERT_FALSE(vm.atEnd());
 
+    std::chrono::steady_clock::time_point time1(std::chrono::milliseconds(6450));
+    EXPECT_CALL(clock, currentSteadyTime()).WillOnce(Return(time1));
     EXPECT_CALL(m_engineMock, lockFrame()).Times(1);
     EXPECT_CALL(m_engineMock, breakFrame()).Times(1);
-    ControlBlocks::m_timeMap[&vm].first = std::chrono::steady_clock::now() - std::chrono::milliseconds(5250);
     vm.run();
 
     ASSERT_EQ(vm.registerCount(), 0);
     ASSERT_TRUE(ControlBlocks::m_timeMap.find(&vm) != ControlBlocks::m_timeMap.cend());
     ASSERT_FALSE(vm.atEnd());
 
+    std::chrono::steady_clock::time_point time2(std::chrono::milliseconds(6500));
+    EXPECT_CALL(clock, currentSteadyTime()).WillOnce(Return(time2));
     EXPECT_CALL(m_engineMock, lockFrame()).Times(1);
     EXPECT_CALL(m_engineMock, breakFrame()).Times(1);
-    ControlBlocks::m_timeMap[&vm].first = std::chrono::steady_clock::now() - std::chrono::milliseconds(5500);
     vm.run();
 
     ASSERT_EQ(vm.registerCount(), 0);
@@ -765,6 +774,8 @@ TEST_F(ControlBlocksTest, WaitImpl)
     ASSERT_EQ(vm.registerCount(), 0);
     ASSERT_TRUE(ControlBlocks::m_timeMap.find(&vm) == ControlBlocks::m_timeMap.cend());
     ASSERT_TRUE(vm.atEnd());
+
+    ControlBlocks::clock = Clock::instance().get();
 }
 
 TEST_F(ControlBlocksTest, WaitUntil)