diff --git a/doc/fixes36.3 b/doc/fixes36.3
index 287b74044..d65976a9d 100644
--- a/doc/fixes36.3
+++ b/doc/fixes36.3
@@ -232,6 +232,7 @@ dipping into an undiscovered potion would offer chance to give a name to the
 	potion even when its description wasn't known (picked up while blind)
 dipping lichen corpse into acid when not blind and acid was undicovered would
 	not offer a chance to give a name to the potion after lichen feedback
+pluralization improvement for words ending in a k-sound like "biotech"
 
 
 Fixes to Post-3.6.2 Problems that Were Exposed Via git Repository
diff --git a/src/objnam.c b/src/objnam.c
index 765414417..ba301b9cf 100644
--- a/src/objnam.c
+++ b/src/objnam.c
@@ -2435,7 +2435,10 @@ const char *oldstr;
 
     /* Ends in z, x, s, ch, sh; add an "es" */
     if (index("zxs", lo_c)
-        || (len >= 2 && lo_c == 'h' && index("cs", lowc(*(spot - 1))))
+        || (len >= 2 && lo_c == 'h' && index("cs", lowc(*(spot - 1)))
+            /* 21st century k-sound */
+            && !(len >= 4 && !strcmpi(spot - 2, "ech")
+                && index("tm", lowc(*(spot - 4)))))
         /* Kludge to get "tomatoes" and "potatoes" right */
         || (len >= 4 && !strcmpi(spot - 2, "ato"))
         || (len >= 5 && !strcmpi(spot - 4, "dingo"))) {