diff --git a/suitesparse.spec b/suitesparse.spec
index 1fea231..3cc749a 100644
--- a/suitesparse.spec
+++ b/suitesparse.spec
@@ -38,7 +38,7 @@
 
 Name:           suitesparse
 Version:        4.4.6
-Release:        18%{?dist}
+Release:        19%{?dist}
 Summary:        A collection of sparse matrix libraries
 
 License:        (LGPLv2+ or BSD) and LGPLv2+ and GPLv2+
@@ -406,7 +406,7 @@ TESTDIRS="$TESTDIRS CSparse"
 TESTDIRS="$TESTDIRS CXSparse"
 %endif
 for d in $TESTDIRS ; do
-    make -C $d/Demo CFLAGS="$RPM_OPT_FLAGS" LAPACK="" SPQR_CONFIG=-DHAVE_TBB TBB=-ltbb
+    make -C $d/Demo CFLAGS="$RPM_OPT_FLAGS" LIB="%{?__global_ldflags} -lm -lrt" LAPACK="" SPQR_CONFIG=-DHAVE_TBB TBB=-ltbb
 done
 
 %files
@@ -424,6 +424,9 @@ done
 %doc Doc/*
 
 %changelog
+* Thu Jun 13 2019 Kalev Lember <klember@redhat.com> - 4.4.6-19
+- Use %__global_ldflags when building tests
+
 * Sun Feb 03 2019 Fedora Release Engineering <releng@fedoraproject.org> - 4.4.6-18
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild