diff --git a/development/Muscles.kif b/development/Muscles.kif
index 42a1e453..ffcf9389 100644
--- a/development/Muscles.kif
+++ b/development/Muscles.kif
@@ -1072,7 +1072,7 @@ extends the &%Head")
 (suppliesBlood IntercostalArteries SerratusPosteriorSuperiorMuscle)
 (ennervates SecondThrough5ThIntercostalNerves SerratusPosteriorSuperiorMuscle)
 (subclass SecondThrough5ThIntercostalNerves Nerve)
-(termFormat EnglishLanguage SecondNdThrough5ThIntercostalNerves "2nd through 5th intercostal nerves")
+(termFormat EnglishLanguage SecondThrough5ThIntercostalNerves "2nd through 5th intercostal nerves")
 (documentation SerratusPosteriorSuperiorMuscle EnglishLanguage "The &%SerratusPosteriorSuperiorMuscle elevates &%Ribs, aiding in inspiration.")
 
 (subclass DiaphragmMuscle Muscle)