diff --git a/fuzzers/074-dump_all/get_speed_model.tcl b/fuzzers/074-dump_all/get_speed_model.tcl
index 8b911ae0..dc752566 100644
--- a/fuzzers/074-dump_all/get_speed_model.tcl
+++ b/fuzzers/074-dump_all/get_speed_model.tcl
@@ -21,8 +21,8 @@ proc get_speed_model_name {name} {
     # This isn't exactly correct, but it is a better model to use.
     # BSW_INT_LONG_MUX is a tl_buffer (which we don't really understand), and
     # BSW_INT_HLONG_MUX is not.  This subsitution appears good enough for now.
-    if { $name == "BSW_INT_LONG_MUX" } {
-        set name "BSW_INT_HLONG_MUX"
+    if { $name == "_BSW_INT_LONG_MUX" } {
+        set name "_BSW_INT_HLONG_MUX"
     }
 
     # Same here!