diff --git a/Makefile b/Makefile
index f63405f..d43d61f 100644
--- a/Makefile
+++ b/Makefile
@@ -7,8 +7,8 @@ DISTDIR := dist
 SRCDIR := src
 TARGET := ButteredToast1
 
-SRCS := $(wildcard $(SRCDIR)/*.ni)
-I6S := $(patsubst %.ni,%.i6,$(SRCS))
+SRCS := $(wildcard $(SRCDIR)/*.inform)
+I6S := $(patsubst %.inform,%.i6,$(SRCS))
 
 all: $(TARGET)
 	$(INBLORB) ButteredToast.blurb ButteredToast.gblorb
@@ -16,7 +16,7 @@ all: $(TARGET)
 $(TARGET): $(I6S)
 	$(INFORM6) -E2w~S~DG $<
 
-%.i6: %.ni
+%.i6: %.inform
 	$(INFORM7) $(ARGS) $<
 
 clean: