diff --git a/examples/07_ci_beta/example b/examples/07_ci_beta/example
index a94d40f..385ade0 100755
Binary files a/examples/07_ci_beta/example and b/examples/07_ci_beta/example differ
diff --git a/examples/07_ci_beta/makefile b/examples/07_ci_beta/makefile
index 39acff1..821add6 100644
--- a/examples/07_ci_beta/makefile
+++ b/examples/07_ci_beta/makefile
@@ -5,22 +5,26 @@
 #   make run
 
 # Compiler
-CC=gcc
+CC=gcc # required for nested functions
 # CC=tcc # <= faster compilation
 
 # Main file
 SRC=example.c ../../squiggle.c ../../squiggle_more.c
-OUTPUT=example
+OUTPUT=./example
 
 ## Dependencies
+OPENMP=-fopenmp
 MATH=-lm
+DEPENDENCIES=$(MATH) $(OPENMP)
+# OPENMP=-fopenmp
 
 ## Flags
 DEBUG= #'-g'
-STANDARD=-std=c99
+STANDARD=-std=c99 ## gnu99 allows for nested functions.
+EXTENSIONS= #-fnested-functions
 WARNINGS=-Wall
-OPTIMIZED=-O3  #-Ofast
-# OPENMP=-fopenmp
+OPTIMIZED=-O3#-Ofast
+CFLAGS=$(DEBUG) $(STANDARD) $(EXTENSIONS) $(WARNINGS) $(OPTIMIZED)
 
 ## Formatter
 STYLE_BLUEPRINT=webkit
@@ -28,13 +32,14 @@ FORMATTER=clang-format -i -style=$(STYLE_BLUEPRINT)
 
 ## make build
 build: $(SRC)
-	$(CC) $(OPTIMIZED) $(DEBUG) $(SRC) $(MATH) -o $(OUTPUT)
+	# gcc -std=gnu99 example.c -lm -o example
+	$(CC) $(CFLAGS) $(SRC) $(DEPENDENCIES) -o $(OUTPUT)
 
 format: $(SRC)
 	$(FORMATTER) $(SRC)
 
 run: $(SRC) $(OUTPUT)
-	OMP_NUM_THREADS=1 ./$(OUTPUT) && echo
+	./$(OUTPUT) && echo
 
 time-linux: 
 	@echo "Requires /bin/time, found on GNU/Linux systems" && echo