diff --git a/.idea/StructuredIO.iml b/.idea/StructuredIO.iml
index ce769e3..ad47194 100644
--- a/.idea/StructuredIO.iml
+++ b/.idea/StructuredIO.iml
@@ -5,7 +5,7 @@
       <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/venv" />
     </content>
-    <orderEntry type="inheritedJdk" />
+    <orderEntry type="jdk" jdkName="Python 3.11 (StructuredIO)" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
   </component>
 </module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 00cc026..806b876 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.10 (StructuredIO)" project-jdk-type="Python SDK" />
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.11 (StructuredIO)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file
diff --git a/structio/core/kernels/fifo.py b/structio/core/kernels/fifo.py
index 251aa1a..1857367 100644
--- a/structio/core/kernels/fifo.py
+++ b/structio/core/kernels/fifo.py
@@ -189,7 +189,7 @@ class FIFOKernel(BaseKernel):
         self.suspend()
         if amount > 0:
             self.event("before_sleep", self.current_task, amount)
-            self.current_task.next_deadline = self.current_task.paused_when + amount
+            self.current_task.next_deadline = self.clock.deadline(amount)
             self.paused.put(self.current_task, amount)
         else:
             # If sleep is called with 0 as argument,
diff --git a/tests/files.py b/tests/files.py
index 171a605..f115b09 100644
--- a/tests/files.py
+++ b/tests/files.py
@@ -34,6 +34,7 @@ async def main_3(data: bytes):
     assert not await path.exists()
     await aprint(f"[main] Done in {structio.clock() - t:.2f} seconds")
 
+
 MB = 1048576
 payload = b"a" * MB * 100
 # Write 100MiB of data (too much?)