Fix spelling.
diff --git a/Modules/collectionsmodule.c b/Modules/collectionsmodule.c
index 16c6e9a..6780c57 100644
--- a/Modules/collectionsmodule.c
+++ b/Modules/collectionsmodule.c
@@ -109,7 +109,7 @@
 	block *prevblock;
 
 	if (deque->len == 0) {
-		PyErr_SetString(PyExc_LookupError, "pop from an emtpy deque");
+		PyErr_SetString(PyExc_LookupError, "pop from an empty deque");
 		return NULL;
 	}
 	item = deque->rightblock->data[deque->rightindex];
@@ -144,7 +144,7 @@
 	block *prevblock;
 
 	if (deque->len == 0) {
-		PyErr_SetString(PyExc_LookupError, "pop from an emtpy deque");
+		PyErr_SetString(PyExc_LookupError, "pop from an empty deque");
 		return NULL;
 	}
 	item = deque->leftblock->data[deque->leftindex];