diff --git a/src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Imports.cs b/src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Imports.cs
index fa6dfd9..0456569 100644
--- a/src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Imports.cs
+++ b/src/SharpEmu.Core/Cpu/Native/DirectExecutionBackend.Imports.cs
@@ -1862,6 +1862,7 @@ public sealed partial class DirectExecutionBackend
 	private static bool IsImportLoopGuardBoundary(string nid) =>
 		nid is
 			"1jfXLRVzisc" or // sceKernelUsleep
+			"1j3S3n-tTW4" or // sceKernelGetTscFrequency (polling/time base query)
 			"WKAXJ4XBPQ4" or // scePthreadCondWait
 			"BmMjYxmew1w" or // scePthreadCondTimedwait
 			"Op8TBGY5KHg" or // pthread_cond_wait
@@ -1870,7 +1871,8 @@ public sealed partial class DirectExecutionBackend
 			"lLMT9vJAck0" or // clock_gettime
 			"-2IRUCO--PM" or // sceKernelReadTsc
 			"4J2sUJmuHZQ" or // sceKernelGetProcessTime
-			"fgxnMeTNUtY";   // sceKernelGetProcessTimeCounter
+			"fgxnMeTNUtY" or // sceKernelGetProcessTimeCounter
+			"yH17Q6NWtVg";   // sceUserServiceGetEvent (non-blocking event poll)
 
 	private void ResetImportLoopPattern()
 	{
diff --git a/tests/SharpEmu.Libs.Tests/Cpu/ImportLoopGuardBoundaryTests.cs b/tests/SharpEmu.Libs.Tests/Cpu/ImportLoopGuardBoundaryTests.cs
index 30f9642..d29056f 100644
--- a/tests/SharpEmu.Libs.Tests/Cpu/ImportLoopGuardBoundaryTests.cs
+++ b/tests/SharpEmu.Libs.Tests/Cpu/ImportLoopGuardBoundaryTests.cs
@@ -30,11 +30,13 @@ public sealed class ImportLoopGuardBoundaryTests
 
     [Theory]
     [InlineData("1jfXLRVzisc")]
+    [InlineData("1j3S3n-tTW4")]
     [InlineData("WKAXJ4XBPQ4")]
     [InlineData("BmMjYxmew1w")]
     [InlineData("Op8TBGY5KHg")]
     [InlineData("27bAgiJmOh0")]
-    public void ExistingWait_ClearsExpiredHistory(string nid)
+    [InlineData("yH17Q6NWtVg")]
+    public void ProgressBoundary_ClearsExpiredHistory(string nid)
     {
         AssertBoundaryClearsExpiredHistory(nid);
     }