diff --git a/rc/base/haskell.kak b/rc/base/haskell.kak
index e23b92b5..9f34c617 100644
--- a/rc/base/haskell.kak
+++ b/rc/base/haskell.kak
@@ -57,7 +57,7 @@ def -hidden haskell-indent-on-new-line %{
 hook -group haskell-highlight global WinSetOption filetype=haskell %{ add-highlighter ref haskell }
 
 hook global WinSetOption filetype=haskell %{
-    set buffer completion_extra_word_chars "'"
+    set buffer completion_extra_word_char "'"
     hook window InsertEnd  .* -group haskell-hooks  haskell-filter-around-selections
     hook window InsertChar \n -group haskell-indent haskell-indent-on-new-line
 }
diff --git a/src/Makefile b/src/Makefile
index b2186394..1ba5c4d4 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -59,7 +59,7 @@ ifeq ($(static),yes)
     LDFLAGS += -static -pthread
 endif
 
-CXXFLAGS += -pedantic -std=gnu++11 -g -Wall -Wno-reorder -Wno-sign-compare -Wno-address
+CXXFLAGS += -pedantic -std=gnu++11 -g -Wall -Wextra -Wno-unused-parameter -Wno-reorder -Wno-sign-compare -Wno-address
 
 all : kak
 kak : $(objects)