diff --git a/contrib/tsearch2/ispell/Makefile b/contrib/tsearch2/ispell/Makefile
index a02e6a82ae..5532359b1c 100644
--- a/contrib/tsearch2/ispell/Makefile
+++ b/contrib/tsearch2/ispell/Makefile
@@ -4,6 +4,7 @@ include $(top_builddir)/src/Makefile.global
 
 
 override CPPFLAGS := -I$(srcdir) -I$(srcdir)/.. $(CPPFLAGS)
+override CFLAGS += $(CFLAGS_SL)
 
 SUBOBJS = spell.o 
 
diff --git a/contrib/tsearch2/snowball/Makefile b/contrib/tsearch2/snowball/Makefile
index 7ba59e24dc..156b1b3d39 100644
--- a/contrib/tsearch2/snowball/Makefile
+++ b/contrib/tsearch2/snowball/Makefile
@@ -4,6 +4,7 @@ include $(top_builddir)/src/Makefile.global
 
 
 override CPPFLAGS := -I$(srcdir) -I$(srcdir)/.. $(CPPFLAGS)
+override CFLAGS += $(CFLAGS_SL)
 
 SUBOBJS = english_stem.o api.o russian_stem.o utilities.o
 
diff --git a/contrib/tsearch2/wordparser/Makefile b/contrib/tsearch2/wordparser/Makefile
index 5322f40696..56d476525f 100644
--- a/contrib/tsearch2/wordparser/Makefile
+++ b/contrib/tsearch2/wordparser/Makefile
@@ -4,6 +4,7 @@ include $(top_builddir)/src/Makefile.global
 
 
 override CPPFLAGS := -I$(srcdir) -I$(srcdir)/.. $(CPPFLAGS)
+override CFLAGS += $(CFLAGS_SL)
 
 SUBOBJS =  parser.o deflex.o