diff --git a/test_problems/cathermo/Makefile.in b/test_problems/cathermo/Makefile.in
index 1afc53587..4f893b898 100644
--- a/test_problems/cathermo/Makefile.in
+++ b/test_problems/cathermo/Makefile.in
@@ -5,15 +5,23 @@
 #
 #
 test_issp=@COMPILE_IDEAL_SOLUTIONS@
+test_electrolytes=@COMPILE_ELECTROLYTES@
+
 all:
 ifeq ($(test_issp),1)
 	cd issp;  @MAKE@ all
 endif
+ifeq ($(test_electrolytes),1)
+	cd ims; @MAKE@ all
+endif
 
 test:
 ifeq ($(test_issp),1)
 	cd issp;  @MAKE@ test
 endif
+ifeq ($(test_electrolytes),1)
+	cd ims; @MAKE@ test
+endif
 
 clean:
 	$(RM) *.*~ 
@@ -23,3 +31,6 @@ depends:
 ifeq ($(test_issp),1)
 	cd issp;         @MAKE@ depends
 endif
+ifeq ($(test_electrolytes),1)
+	cd ims; @MAKE@ depends
+endif