diff --git a/doc/funcref.sgml b/doc/funcref.sgml
index 4571d34a3..b66344a01 100644
--- a/doc/funcref.sgml
+++ b/doc/funcref.sgml
@@ -3785,7 +3785,7 @@ switching the CPU into double clock mode.
 <tag/Description/<tt/fdisp/ flashes front-panel display.
 <tag/Notes/<itemize>
 <item>The function is specific to the Sym-1.
-<item>The front-panel display buffer mut be loaded prior to calling fdisp.  See the DISPLAY struct definition in sym1.h.
+<item>The front-panel display buffer must be loaded prior to calling fdisp.  See the DISPLAY struct definition in sym1.h.
 </itemize>
 <tag/Availability/cc65
 <tag/See also/