diff --git a/Makefile b/Makefile
index a9e0191..2980f0b 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ obj = $(src:.c=.o) uECC.o
 
 LIBCBOR = tinycbor/lib/libtinycbor.a
 LDFLAGS = -Wl,--gc-sections $(LIBCBOR)
-CFLAGS = -O2 -fdata-sections -ffunction-sections 
+CFLAGS = -O2 -fdata-sections -ffunction-sections
 
 INCLUDES = -I./tinycbor/src -I./crypto/sha256 -I./crypto/micro-ecc/ -Icrypto/tiny-AES-c/ -I./fido2/ -I./pc -I./fido2/extensions
 
@@ -31,7 +31,7 @@ name = main
 all: python-fido2 main
 
 .PHONY: test
-test: 
+test:
 	$(MAKE) -C . main
 	$(MAKE) -C . testgcm
 	./testgcm
@@ -55,7 +55,7 @@ efm8prog:
 efm32com:
 	cd './targets/efm32/GNU ARM v7.2.1 - Debug' && $(MAKE) all
 efm32prog: efm32com
-	commander flash './targets/efm32/GNU ARM v7.2.1 - Debug/EFM32.hex' $(EFM32_DEBUGGER)  -p "0x1E7FC:0x00000000:4" 
+	commander flash './targets/efm32/GNU ARM v7.2.1 - Debug/EFM32.hex' $(EFM32_DEBUGGER)  -p "0x1E7FC:0x00000000:4"
 efm32read: efm32com
 	commander swo read $(EFM32_DEBUGGER)
 efm32bootprog: efm32com
@@ -64,10 +64,10 @@ efm32bootprog: efm32com
 $(name): $(obj) $(LIBCBOR)
 	$(CC) $(LDFLAGS) -o $@ $(obj) $(LDFLAGS)
 
-crypto/aes-gcm/aes_gcm.o: 
+crypto/aes-gcm/aes_gcm.o:
 	$(CC) -c crypto/aes-gcm/aes_gcm.c $(CFLAGS) -DTEST -o crypto/aes-gcm/aes_gcm.o
 
-testgcm: $(obj) $(LIBCBOR) crypto/aes-gcm/aes_gcm.o             
+testgcm: $(obj) $(LIBCBOR) crypto/aes-gcm/aes_gcm.o
 	$(CC) -c fido2/main.c $(CFLAGS) -DTEST -o fido2/main.o
 	$(CC) $(LDFLAGS) -o $@ $^ $(LDFLAGS)
 
@@ -86,11 +86,11 @@ venv:
 	    echo "   pip install virtualenv" ;\
 	fi
 	virtualenv venv
-	./venv/bin/pip install wheel 
+	./venv/bin/pip install wheel
 
 .PHONY: python-fido2
 python-fido2: venv
-	cd python-fido2/ && ../venv/bin/python setup.py install 
+	cd python-fido2/ && ../venv/bin/python setup.py install
 
 venv/bin/mkdocs: venv
 	./venv/bin/pip install mkdocs mkdocs-material
@@ -111,4 +111,3 @@ clean:
 	    fi ;\
 	done
 	rm -rf venv
-
diff --git a/docs/documenting.md b/docs/documenting.md
index 012d8d1..f55a718 100644
--- a/docs/documenting.md
+++ b/docs/documenting.md
@@ -2,6 +2,10 @@ Documentation of the `master` branch is deployed to Netlify automatically.
 
 To host or develop locally:
 
-- `make docsrv` and visit [localhost:8000](http://localhost:8000).
+```
+pip install mkdocs mkdocs-material
+```
+
+`make docsrv` and visit [localhost:8000](http://localhost:8000).
 
 The file `runtime.txt` is necessary to tell Netlify to use Python3.