diff --git a/COMPILE.txt b/COMPILE.txt
new file mode 100644
index 0000000..323e4c7
--- /dev/null
+++ b/COMPILE.txt
@@ -0,0 +1,45 @@
+- Information file for 'pastebincl' by Théophile BASTIAN (aka Tobast) -
+
+So, you've downloaded the source code of PastebinCL and don't know how to compile it?
+Follow those steps!
+
+
+----------------
+BEFORE COMPILING
+----------------
+
+- You'll maybe have a file named "data_devcode_default.h" and no "data_devcode.h". Then rename it to "data_devcode.h".
+- Get your Pastebin Developper API Key on this page : http://pastebin.com/api (you must register to http://pastebin.com, it's free).
+- Open "data_devcode.h", and define "DEVELOPPER_CODE" to your Developper API Key by adding it between the quotes, eg.
+	#define DEVELOPPER_CODE "[my_api_key_here]"
+- Save and close "data_devcode.h"
+- Open "data.h" and select your OS by commenting the wrong one (add "//" at the beginning of the line) and uncommenting the other, eg.
+	If you're using Windows:
+		// #define UNIX
+		#define WINDOWS
+
+	If you're using UNIX (Linux, MacOS, BSD, ...):
+		#define UNIX
+		// #define WINDOWS
+	
+	(around the line 40, you'll find this code)
+- Save and close "data.h"
+- You're ready to compile!
+
+
+------------------------
+COMPILE ON UNIX-BASED OS
+------------------------
+
+- Just run "make" and then "make install" (as root for installing) ;)
+
+
+------------------
+COMPILE ON WINDOWS
+------------------
+
+- If you can run "make" using CygWIN, MinGW or other, that's the easiest way.
+- Else, you can create a Code::blocks or other IDE project and then compile.
+
+(But, really, I cannot see why you want to use a command-line tool on Windows.)
+
diff --git a/Makefile b/Makefile
index e72797f..76546f9 100644
--- a/Makefile
+++ b/Makefile
@@ -8,10 +8,15 @@ CXXLIBS=-lcurl
 TARGET=pastebincl
 OBJS=CurlPost.o func.o main.o ParameterRead.o ConfigRead.o
 
-all: $(TARGET) makeuser
+all: checkdevcode $(TARGET)
 
-makeuser:
-	./pastebincl --usergen < userinput &> /dev/null
+checkdevcode:
+	@if [[ ! -f data_devcode.h ]]; then echo -e "\nERROR: No 'data_devcode.h' file (common error). Please read \"COMPILE.txt\" for more help.\n" ; false ; fi
+	@if (( `cat data_devcode.h | grep -c '#define DEVELOPPER_CODE ""'` != 0 )); then echo -e "\nERROR: 'DEVELOPPER_CODE' undefined (common error). Please read \"COMPILE.txt\" for more help.\n" ; false ; fi
+
+#### Useful while developping. To enable it, uncomment and add it as a dependence of 'all' ####
+#makeuser:
+#	./pastebincl --usergen < userinput &> /dev/null
 
 $(TARGET): $(OBJS)
 	$(CXX) $(CXXLIBS) $^ $(CXXFLAGS) -o $@