diff --git a/test/misc/Makefile b/test/misc/Makefile
index cfcae0530..ebae0964e 100644
--- a/test/misc/Makefile
+++ b/test/misc/Makefile
@@ -102,6 +102,14 @@ $(WORKDIR)/bug1265.$1.$2.prg: bug1265.c | $(WORKDIR)
 	$(LD65) -t sim$2 -o $$@ $$(@:.prg=.o) sim$2.lib $(NULLERR)
 	$(SIM65) $(SIM65FLAGS) $$@ $(NULLOUT) $(NULLERR)
 
+# should not compile, but gives different diagnostics in C99 mode than in others
+$(WORKDIR)/bug2515.$1.$2.prg: bug2515.c | $(WORKDIR)
+	$(if $(QUIET),echo misc/bug2515.$1.$2.prg)
+	$(NOT) $(CC65) --standard c99 -t sim$2 -$1 -o $$(@:.prg=.s) $$< 2>$(WORKDIR)/bug2515.$1.$2.out
+	$(ISEQUAL) $(WORKDIR)/bug2515.$1.$2.out bug2515.c99.ref
+	$(NOT) $(CC65) -t sim$2 -$1 -o $$(@:.prg=.s) $$< 2>$(WORKDIR)/bug2515.$1.$2.out
+	$(ISEQUAL) $(WORKDIR)/bug2515.$1.$2.out bug2515.ref
+
 # this one requires -Werror
 $(WORKDIR)/bug1768.$1.$2.prg: bug1768.c | $(WORKDIR)
 	$(if $(QUIET),echo misc/bug1768.$1.$2.prg)
diff --git a/test/misc/bug2515.c b/test/misc/bug2515.c
new file mode 100644
index 000000000..62ee52a25
--- /dev/null
+++ b/test/misc/bug2515.c
@@ -0,0 +1,4 @@
+
+#line 13"x"
+#define X"y"
+int main() { foo; }
diff --git a/test/misc/bug2515.c99.ref b/test/misc/bug2515.c99.ref
new file mode 100644
index 000000000..f6cf2fcea
--- /dev/null
+++ b/test/misc/bug2515.c99.ref
@@ -0,0 +1,2 @@
+x:13: Warning: ISO C99 requires whitespace after the macro name
+x:14: Error: Undeclared identifier 'foo'
diff --git a/test/misc/bug2515.ref b/test/misc/bug2515.ref
new file mode 100644
index 000000000..affbaebb9
--- /dev/null
+++ b/test/misc/bug2515.ref
@@ -0,0 +1 @@
+x:14: Error: Undeclared identifier 'foo'