diff --git a/tests/scripts/run-test-suites.pl b/tests/scripts/run-test-suites.pl
index e0ee3f5..408deaf 100755
--- a/tests/scripts/run-test-suites.pl
+++ b/tests/scripts/run-test-suites.pl
@@ -59,8 +59,15 @@
       ')(\z|\.)' );
 
 # in case test suites are linked dynamically
-$ENV{'LD_LIBRARY_PATH'} = '../library';
-$ENV{'DYLD_LIBRARY_PATH'} = '../library';
+if (-d '../../tf-psa-crypto') {
+    $ENV{'LD_LIBRARY_PATH'} = '../../library';
+    $ENV{'DYLD_LIBRARY_PATH'} = '../../library';
+}
+else
+{
+    $ENV{'LD_LIBRARY_PATH'} = '../library';
+    $ENV{'DYLD_LIBRARY_PATH'} = '../library';
+}
 
 my $prefix = $^O eq "MSWin32" ? '' : './';