diff --git a/src/Makefile.am b/src/Makefile.am
index 2e6234c..f28be76 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -6,6 +6,10 @@ libr3_la_SOURCES = node.c edge.c str.c token.c zmalloc.c
 libr3_la_LIBADD=$(DEPS_LIBS)
 AM_CFLAGS=$(DEPS_CFLAGS) -I$(top_builddir) -I$(top_builddir)/include -Wall
 
+if USE_JEMALLOC
+AM_CFLAGS += -ljemalloc
+endif
+
 if ENABLE_DEBUG
 AM_CFLAGS += -ggdb -fprofile-arcs -ftest-coverage
 endif
diff --git a/tests/Makefile.am b/tests/Makefile.am
index d0b1388..21dd302 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -8,6 +8,7 @@ TESTS                       = check_tree
 AM_CFLAGS = -ggdb $(DEPS_CFLAGS) -I$(top_builddir) -I$(top_builddir)/include  @CHECK_CFLAGS@
 AM_LDFLAGS = $(DEPS_LIBS) -L$(top_builddir)/src -lr3 @CHECK_LIBS@
 
+
 noinst_HEADERS = \
 	bench.h \
 	$(NULL)
@@ -16,6 +17,10 @@ dist_noinst_DATA = \
 	bench_str.csv \
 	$(NULL)
 
+if USE_JEMALLOC
+AM_CFLAGS += -ljemalloc
+endif
+
 if ENABLE_GRAPHVIZ
 TESTS += check_gvc
 check_gvc_SOURCES = check_gvc.c bench.c