diff --git a/tests/bin/setup-env.in b/tests/bin/setup-env.in
index 27ee3bd37..ff3b6291a 100644
--- a/tests/bin/setup-env.in
+++ b/tests/bin/setup-env.in
@@ -38,4 +38,4 @@ hx509_data="${top_srcdir}/lib/hx509/data"
 
 
 # malloc debug
-HEIM_MALLOC_DEBUG="MallocStackLoggingNoCompact=1 MallocErrorAbort=1"
+HEIM_MALLOC_DEBUG="MallocStackLoggingNoCompact=1 MallocErrorAbort=1 MallocLogFile=/tmp/heim-malloc-log"