diff --git a/Makefile b/Makefile
index b25c7f3..6164681 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ CC=cc
 DIST=build
 OUT=$(DIST)/alisp.out
 
-UNITS=main.c $(shell find ./runtime -type 'f')
+UNITS=$(shell find ./src -type 'f')
 OBJECTS:=$(patsubst %.c, $(DIST)/%.o, $(UNITS))
 
 LDFLAGS=
@@ -29,11 +29,10 @@ $(DIST)/%.o: %.c | $(DIST) $(DEPDIR)
 	$(CC) $(CFLAGS) $(DEPFLAGS) $(DEPDIR)/$*.d -c -o $@ $<
 
 $(DIST):
-	mkdir -p $(DIST) $(DIST)/runtime
+	mkdir -p $(DIST)/src
 
 $(DEPDIR):
-	mkdir -p $(DEPDIR)
-	mkdir -p $(DEPDIR)/runtime
+	mkdir -p $(DEPDIR)/src
 
 clangd: compile_commands.json
 compile_commands.json: Makefile
diff --git a/runtime/constructor.c b/src/constructor.c
similarity index 100%
rename from runtime/constructor.c
rename to src/constructor.c
diff --git a/main.c b/src/main.c
similarity index 100%
rename from main.c
rename to src/main.c
diff --git a/runtime/stream.c b/src/stream.c
similarity index 100%
rename from runtime/stream.c
rename to src/stream.c
diff --git a/runtime/sv.c b/src/sv.c
similarity index 100%
rename from runtime/sv.c
rename to src/sv.c
diff --git a/runtime/symtable.c b/src/symtable.c
similarity index 100%
rename from runtime/symtable.c
rename to src/symtable.c
diff --git a/runtime/sys.c b/src/sys.c
similarity index 100%
rename from runtime/sys.c
rename to src/sys.c
diff --git a/runtime/tag.c b/src/tag.c
similarity index 100%
rename from runtime/tag.c
rename to src/tag.c
diff --git a/runtime/vec.c b/src/vec.c
similarity index 100%
rename from runtime/vec.c
rename to src/vec.c