diff --git a/audio/clam/clam.SlackBuild b/audio/clam/clam.SlackBuild
index 34c3980e71..44f7436870 100644
--- a/audio/clam/clam.SlackBuild
+++ b/audio/clam/clam.SlackBuild
@@ -66,6 +66,18 @@ if [ "$LIBDIRSUFFIX" != "" ]; then
   sed -i "s,/lib\>,/lib$LIBDIRSUFFIX," scons/libs/clam_build_helpers.py
 fi
 
+# 20200118 bkw: as part of its configure process, scons compiles and runs
+# a sample jack program. With jack2, if jackd isn't already running,
+# this creates root-owned files in /dev/shm/jack_db that don't get
+# deleted afterwards.  No problem, except that the next time the user
+# tries to start jackd, it will be unable to write to jack_db. Which
+# makes jackd segfault. Even if it didn't segfault, it would presumably
+# still not start (with an error message). The workaround is to NOT
+# compile/run the jack test program (just assume the test succeeds).
+# Whew. The explanation is *way* more complex than the fix.
+sed -i '/CheckLibrarySample.*jack_test_code/,+1d' \
+        scons/libs/clam_dependent_libs_checks.py
+
 CCFLAGS="$SLKCFLAGS" \
 CPPFLAGS="$SLKCFLAGS" \
 	scons configure \