diff --git a/src/s_advsound.cpp b/src/s_advsound.cpp
index cea8950ac..ad6be7875 100644
--- a/src/s_advsound.cpp
+++ b/src/s_advsound.cpp
@@ -1899,6 +1899,19 @@ bool S_ParseTimeTag(const char *tag, bool *as_samples, unsigned int *time)
 	return true;
 }
 
+//==========================================================================
+//
+// sfxinfo_t :: MarkUsed
+//
+// Marks this sound for precaching.
+//
+//==========================================================================
+
+void sfxinfo_t::MarkUsed()
+{
+	bUsed = true;
+}
+
 //==========================================================================
 //
 // CCMD soundlist