diff --git a/src/core/corelib.c b/src/core/corelib.c
index ecd65257..9fb1daad 100644
--- a/src/core/corelib.c
+++ b/src/core/corelib.c
@@ -399,7 +399,7 @@ JANET_CORE_FN(janet_core_is_abstract,
 
 JANET_CORE_FN(janet_core_scannumber,
               "(scan-number str &opt base)",
-              "Parse a number from a byte sequence an return that number, either and integer "
+              "Parse a number from a byte sequence and return that number, either an integer "
               "or a real. The number "
               "must be in the same format as numbers in janet source code. Will return nil "
               "on an invalid number. Optionally provide a base - if a base is provided, no "