diff --git a/tests/filters/Makefile.am b/tests/filters/Makefile.am
index 702241915..e2e5f03eb 100644
--- a/tests/filters/Makefile.am
+++ b/tests/filters/Makefile.am
@@ -3,7 +3,7 @@
 TESTS = \
 	lowpass.cir
 
-TESTS_ENVIRONMENT = $(SHELL) $(srcdir)/../check.sh $(top_builddir)/src/ngspice
+TESTS_ENVIRONMENT = $(SHELL) $(top_srcdir)/tests/bin/check.sh $(top_builddir)/src/ngspice
 
 EXTRA_DIST = \
 	$(TESTS)		\
diff --git a/tests/filters/lowpass.out b/tests/filters/lowpass.out
index 5fcc213b9..29884d638 100644
--- a/tests/filters/lowpass.out
+++ b/tests/filters/lowpass.out
@@ -29,10 +29,17 @@ c1 2 0 1n
  Capacitor models (Fixed capacitor)
       model                     C
 
+        cap                     0
          cj                     0
        cjsw                     0
        defw                 1e-05
+       defl                     0
      narrow                     0
+      short                     0
+        tc1                     0
+        tc2                     0
+         di                     0
+      thick                     0
 
  Resistor models (Simple linear resistor)
       model                     R
@@ -43,11 +50,14 @@ c1 2 0 1n
         tc1                     0
         tc2                     0
        defw                 1e-05
+         kf                     0
+         af                     0
 
  Capacitor: Fixed capacitor
      device                    c1
       model                     C
 capacitance                 1e-09
+      dtemp                     0
           i                     0
           p                     0
 
@@ -55,7 +65,9 @@ capacitance                 1e-09
      device                    r2                    r1
       model                     R                     R
  resistance                 10000                 10000
-         ac                     0                     0
+         ac                 10000                 10000
+      dtemp                     0                     0
+      noisy                     1                     1
           i                     0                     0
           p                     0                     0