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-rwxr-xr-xlib/system.nim2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/system.nim b/lib/system.nim
index b32f17d6a..024b84077 100755
--- a/lib/system.nim
+++ b/lib/system.nim
@@ -215,6 +215,8 @@ type
 
   EInvalidValue* = object of ESynch     ## is the exception class for string
                                         ## and object conversion errors.
+  EInvalidKey* = object of EInvalidValue ## is the exception class if a key
+                                         ## cannot be found in a table.
 
   EOutOfMemory* = object of ESystem     ## is the exception class for
                                         ## unsuccessful attempts to allocate