diff --git a/examples/USER/misc/pinning/in.pinning b/examples/USER/misc/pinning/in.pinning
index 607335cf1a4fa9655104b646bd83ff1fa64bceb4..0c220f480b7ca8586c29b96b0455dd5002efda4d 100644
--- a/examples/USER/misc/pinning/in.pinning
+++ b/examples/USER/misc/pinning/in.pinning
@@ -20,7 +20,7 @@ fix ensemble all npt temp 0.8 0.8 4.0 z 2.185 2.185 8.0
 fix 100 all momentum 100 linear 1 1 1
 
 # harmonic rho_k bias-field 
-#                 nx ny nz k     a
+#                 nx ny nz K     a
 fix bias all rhok 16 0  0  4.0   26.00
 
 # output                                U_bias rho_k_RE  rho_k_IM |rho_k|