diff --git a/src/Makefile.am b/src/Makefile.am
index 5fc5c1c..675c530 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -36,7 +36,7 @@ libiperf_a_SOURCES      = \
 # Specify the sources and various flags for the iperf binary
 iperf3_SOURCES          = main.c
 iperf3_CFLAGS           = -g -Wall
-iperf3_LDADD            = libiperf.a
+iperf3_LDADD            = libiperf.a -lm
 iperf3_LDFLAGS          = 
 
 # Specify the sources and various flags for the profiled iperf binary. This
@@ -45,7 +45,7 @@ iperf3_profile_SOURCES  = main.c \
 						  $(libiperf_a_SOURCES)
 
 iperf3_profile_CFLAGS   = -pg -Wall
-iperf3_profile_LDADD    = libiperf.a
+iperf3_profile_LDADD    = libiperf.a -lm
 iperf3_profile_LDFLAGS  =
 
 # Specify the sources and various flags for the test cases
diff --git a/src/Makefile.in b/src/Makefile.in
index 5ae6bce..4f1963f 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -268,7 +268,7 @@ libiperf_a_SOURCES = \
 # Specify the sources and various flags for the iperf binary
 iperf3_SOURCES = main.c
 iperf3_CFLAGS = -g -Wall
-iperf3_LDADD = libiperf.a
+iperf3_LDADD = libiperf.a -lm
 iperf3_LDFLAGS = 
 
 # Specify the sources and various flags for the profiled iperf binary. This
@@ -277,7 +277,7 @@ iperf3_profile_SOURCES = main.c \
 						  $(libiperf_a_SOURCES)
 
 iperf3_profile_CFLAGS = -pg -Wall
-iperf3_profile_LDADD = libiperf.a
+iperf3_profile_LDADD = libiperf.a -lm
 iperf3_profile_LDFLAGS = 
 
 # Specify the sources and various flags for the test cases