diff --git a/Makefile b/Makefile
index e521021..7b885f6 100644
--- a/Makefile
+++ b/Makefile
@@ -18,7 +18,7 @@ sun-to-decimal: $(DEP)
 	$(CC) $(CFLAGS) -DFROM_NUMERICALS=\"123456789\" -DTO_NUMERICALS=\"0123456789\" -DTO_FIRST_NUMBER_VOID -DTO_INFINITE_BASE -o $@ $^
 
 sun-to-earth: $(DEP)
-	$(CC) $(CFLAGS) -DFROM_NUMERICALS=\"123456789\" -DTO_NUMERICALS=\"12345\" $@ $^
+	$(CC) $(CFLAGS) -DFROM_NUMERICALS=\"123456789\" -DTO_NUMERICALS=\"12345\" -o $@ $^
 
 earth-to-sun: $(DEP)
 	$(CC) $(CFLAGS) -DFROM_NUMERICALS=\"12345\" -DTO_NUMERICALS=\"123456789\" -o $@ $^