diff --git a/Changes b/Changes
index c50d10945..22b31b142 100644
--- a/Changes
+++ b/Changes
@@ -5,6 +5,8 @@ indicates the contributor was also the author of the fix; Thanks!
 
 * Verilator 3.80***
 
+**** Skip SystemC tests if not installed.  [Iztok Jeras]
+
 **** Fix make uninstall, bug216.  [Iztok Jeras]
 
 * Verilator 3.800 2010/02/07
diff --git a/test_sc/Makefile b/test_sc/Makefile
index 9c56f8587..e97df4925 100644
--- a/test_sc/Makefile
+++ b/test_sc/Makefile
@@ -24,8 +24,13 @@ include $(VERILATOR_ROOT)/include/verilated.mk
 DEBUG_ON = --debug
 
 ######################################################################
+ifneq ($(SYSTEMC),)
 test_default:  precopy prep        preproc compile run
 test_debug:    precopy prep_dbg    preproc compile run
+else
+test_default:  nosc
+test_debug:    nosc
+endif
 
 V_FLAGS = -f $(VERILATOR_ROOT)/test_v/input.vc
 VERILATOR_FLAGS = --sc $(V_FLAGS) top.v
@@ -52,6 +57,11 @@ run:
 obj_dir:
 	mkdir $@
 
+nosc:
+	@echo
+	@echo %Skip: SYSTEMC not in environment
+	@echo
+
 ######################################################################
 
 maintainer-copy::
diff --git a/test_sp/Makefile b/test_sp/Makefile
index 9f0296e6a..6d8abf5fa 100644
--- a/test_sp/Makefile
+++ b/test_sp/Makefile
@@ -24,9 +24,15 @@ include $(VERILATOR_ROOT)/include/verilated.mk
 DEBUG_ON = --debug --trace-dups
 
 ######################################################################
+ifneq ($(SYSTEMPERL),)
 test_default:  precopy prep        preproc compile     run coverage
 test_debug:    precopy prep_dbg    preproc compile_dbg run coverage
 test_nopublic: precopy prep_dbg_np preproc compile_dbg run coverage
+else
+test_default:  nosp
+test_debug:    nosp
+test_nopublic: nosp
+endif
 
 V_FLAGS = -f $(VERILATOR_ROOT)/test_v/input.vc
 
@@ -67,6 +73,11 @@ coverage:
 obj_dir:
 	mkdir $@
 
+nosp:
+	@echo
+	@echo %Skip: SYSTERMPERL not in environment
+	@echo
+
 ######################################################################
 
 maintainer-copy::