diff --git a/libctru/include/3ds/synchronization.h b/libctru/include/3ds/synchronization.h
old mode 100644
new mode 100755
index bbd18f4..85c2e5c
--- a/libctru/include/3ds/synchronization.h
+++ b/libctru/include/3ds/synchronization.h
@@ -266,6 +266,14 @@ void LightSemaphore_Init(LightSemaphore* semaphore, s16 initial_count, s16 max_c
  */
 void LightSemaphore_Acquire(LightSemaphore* semaphore, s32 count);
 
+/**
+ * @brief Attempts to acquire a light semaphore.
+ * @param semaphore Pointer to the semaphore.
+ * @param count Acquire count
+ * @return Zero on success, non-zero on failure
+ */
+int LightSemaphore_TryAcquire(LightSemaphore* semaphore, s32 count);
+
 /**
  * @brief Releases a light semaphore.
  * @param semaphore Pointer to the semaphore.
diff --git a/libctru/source/synchronization.c b/libctru/source/synchronization.c
index 9750bfc..65a387f 100644
--- a/libctru/source/synchronization.c
+++ b/libctru/source/synchronization.c
@@ -251,7 +251,7 @@ void LightSemaphore_Acquire(LightSemaphore* semaphore, s32 count)
 		for (;;)
 		{
 			old_count = __ldrex(&semaphore->current_count);
-			if (old_count > 0)
+			if (old_count >= count)
 				break;
 			__clrex();
 
@@ -268,6 +268,22 @@ void LightSemaphore_Acquire(LightSemaphore* semaphore, s32 count)
 	} while (__strex(&semaphore->current_count, old_count - count));
 }
 
+int LightSemaphore_TryAcquire(LightSemaphore* semaphore, s32 count)
+{
+	s32 old_count;
+	do
+	{
+		old_count = __ldrex(&semaphore->current_count);
+		if (old_count < count)
+		{
+			__clrex();
+			return 1; // failure
+		}
+	} while (__strex(&semaphore->current_count, old_count - count));
+	
+	return 0; // success
+}
+
 void LightSemaphore_Release(LightSemaphore* semaphore, s32 count)
 {
 	s32 old_count, new_count;