diff --git a/Makefile b/Makefile
index 2bb45fbe..cc909913 100644
--- a/Makefile
+++ b/Makefile
@@ -80,6 +80,9 @@ include/chibi/install.h: Makefile
 %.o: %.c $(BASE_INCLUDES)
 	$(CC) -c $(XCPPFLAGS) $(XCFLAGS) $(CLIBFLAGS) -o $@ $<
 
+gc-ulimit.o: gc.c $(BASE_INCLUDES)
+	$(CC) -c $(XCPPFLAGS) $(XCFLAGS) $(CLIBFLAGS) -DSEXP_USE_LIMITED_MALLOC -o $@ $<
+
 sexp-ulimit.o: sexp.c $(BASE_INCLUDES)
 	$(CC) -c $(XCPPFLAGS) $(XCFLAGS) $(CLIBFLAGS) -DSEXP_USE_LIMITED_MALLOC -o $@ $<
 
@@ -87,7 +90,7 @@ main.o: main.c $(INCLUDES)
 	$(CC) -c $(XCPPFLAGS) $(XCFLAGS) -o $@ $<
 
 SEXP_OBJS = gc.o sexp.o bignum.o
-SEXP_ULIMIT_OBJS = gc.o sexp-ulimit.o bignum.o
+SEXP_ULIMIT_OBJS = gc-ulimit.o sexp-ulimit.o bignum.o
 EVAL_OBJS = opcodes.o vm.o eval.o simplify.o
 
 libchibi-sexp$(SO): $(SEXP_OBJS)
diff --git a/tests/memory/test00-read-string.err-res b/tests/memory/test00-read-string.err-res
index 5ebc44a8..c52e0fd4 100644
--- a/tests/memory/test00-read-string.err-res
+++ b/tests/memory/test00-read-string.err-res
@@ -1 +1,5 @@
 ERROR: out of memory
+  called from <anonymous> on line 513 of file ./lib/init-7.scm
+  called from <anonymous> on line 15 of file tests/memory/test00-read-string.scm
+  called from <anonymous> on line 1000 of file ./lib/init-7.scm
+  called from <anonymous> on line 526 of file ./lib/init-7.scm
diff --git a/tests/memory/test01-read-symbol.err-res b/tests/memory/test01-read-symbol.err-res
index 5ebc44a8..02e0b655 100644
--- a/tests/memory/test01-read-symbol.err-res
+++ b/tests/memory/test01-read-symbol.err-res
@@ -1 +1,5 @@
 ERROR: out of memory
+  called from <anonymous> on line 513 of file ./lib/init-7.scm
+  called from <anonymous> on line 11 of file tests/memory/test01-read-symbol.scm
+  called from <anonymous> on line 1000 of file ./lib/init-7.scm
+  called from <anonymous> on line 526 of file ./lib/init-7.scm