diff --git a/configure.ac b/configure.ac
index eeae5ae5..ff0fa07e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -31,6 +31,7 @@ AC_PROG_CXX
 
 # Checks for pthread
 AX_PTHREAD
+LDFLAGS="$LDFLAGS -pthread"
 
 # Checks for code coverage
 AX_CODE_COVERAGE