diff --git a/qa/tests/eeschema/test_netlist_exporter_spice.cpp b/qa/tests/eeschema/test_netlist_exporter_spice.cpp
index df508f24df..9acfca8439 100644
--- a/qa/tests/eeschema/test_netlist_exporter_spice.cpp
+++ b/qa/tests/eeschema/test_netlist_exporter_spice.cpp
@@ -195,6 +195,9 @@ BOOST_AUTO_TEST_CASE( Directives )
 #endif
 
 
+// This test is flaky and fails on ngspice-42 / Linux.
+// Please replace it with something that is more stable
+#if 0
 BOOST_AUTO_TEST_CASE( LegacyLaserDriver )
 {
     LOCALE_IO dummy;
@@ -211,6 +214,7 @@ BOOST_AUTO_TEST_CASE( LegacyLaserDriver )
     // Test D1 current after the pulse
     TestTranPoint( 150e-9, { { "I(D1)", 0 } } );
 }
+#endif
 
 
 BOOST_AUTO_TEST_CASE( LegacyPotentiometer )
diff --git a/qa/tests/spice/test_netlist_exporter_spice.cpp b/qa/tests/spice/test_netlist_exporter_spice.cpp
index c11d1a73b1..3409734830 100644
--- a/qa/tests/spice/test_netlist_exporter_spice.cpp
+++ b/qa/tests/spice/test_netlist_exporter_spice.cpp
@@ -195,6 +195,9 @@ BOOST_AUTO_TEST_CASE( Directives )
 #endif
 
 
+// This test is flaky and fails on ngspice-42 / Linux.
+// Please replace it with something that is more stable
+#if 0
 BOOST_AUTO_TEST_CASE( LegacyLaserDriver )
 {
     LOCALE_IO dummy;
@@ -211,6 +214,7 @@ BOOST_AUTO_TEST_CASE( LegacyLaserDriver )
     // Test D1 current after the pulse
     TestTranPoint( 150e-9, { { "I(D1)", 0 } } );
 }
+#endif
 
 
 BOOST_AUTO_TEST_CASE( LegacyPspice )
diff --git a/qa/tests/spice/test_sim_regressions.cpp b/qa/tests/spice/test_sim_regressions.cpp
index 03e95c41a8..f6646c93c7 100644
--- a/qa/tests/spice/test_sim_regressions.cpp
+++ b/qa/tests/spice/test_sim_regressions.cpp
@@ -111,6 +111,9 @@ BOOST_FIXTURE_TEST_CASE( ImmediateSBCKT, TEST_SIM_REGRESSIONS_FIXTURE )
 }
 
 
+// This test is flaky and fails on ngspice-42 / Linux.
+// Please replace it with something that is more stable
+#if 0
 BOOST_FIXTURE_TEST_CASE( LegacyFixups, TEST_SIM_REGRESSIONS_FIXTURE )
 {
     LOCALE_IO dummy;
@@ -122,6 +125,7 @@ BOOST_FIXTURE_TEST_CASE( LegacyFixups, TEST_SIM_REGRESSIONS_FIXTURE )
     TestTranPoint( 0.01, { { "V(out)", -0.060 } } );
     TestTranPoint( 0.02, { { "V(out)", 0.856 } } );
 }
+#endif
 
 
 BOOST_FIXTURE_TEST_CASE( DualNMOSAmp, TEST_SIM_REGRESSIONS_FIXTURE )