diff --git a/extension/Makefile.am b/extension/Makefile.am
index df55b98..b590a5b 100644
--- a/extension/Makefile.am
+++ b/extension/Makefile.am
@@ -77,7 +77,7 @@ inplace_la_LIBADD     = $(MY_LIBS)
 # Solaris in addition wants the math library.
 intdiv_la_SOURCES     = intdiv.c
 intdiv_la_LDFLAGS     = $(MY_MODULE_FLAGS)
-intdiv_la_LIBADD      = $(MY_LIBS) $(LIBMPFR) -lm
+intdiv_la_LIBADD      = $(MY_LIBS)
 
 ordchr_la_SOURCES     = ordchr.c
 ordchr_la_LDFLAGS     = $(MY_MODULE_FLAGS)