diff --git a/build/makefile b/build/makefile
index 43e1b6f..cd85578 100644
--- a/build/makefile
+++ b/build/makefile
@@ -51,11 +51,11 @@ endif
 
 #-------------------------------------------------------------------------------
 #
-# generate new makedeps file if does not exists
+# generate object file dependencies
 #
 $(info Generating dependencies.)
 $(shell ./mkdeps.sh $(SRCSDIR) $(OBJSDIR) > makedeps)
-$(shell sleep 1)
+$(info )
 
 #-------------------------------------------------------------------------------
 #
@@ -93,7 +93,7 @@ modules = algebra blocks boundaries constants coordinates domains driver       \
           shapes sources timers user_problem utils
 
 sources := $(addprefix $(SRCSDIR)/,$(addsuffix .F90, $(modules)))
-objects := $(addprefix $(OBJSDIR)/,$(addsuffix .o, $(modules)))
+objects := $(addprefix $(OBJSDIR)/,$(addsuffix .o,   $(modules)))
 
 all: $(name).x
 
@@ -116,7 +116,7 @@ clean:
 
 #-------------------------------------------------------------------------------
 #
-# object files dependencies (generated using mkdeps.sh script)
+# object file dependencies (generated using mkdeps.sh script)
 #
 include makedeps
 
diff --git a/build/mkdeps.sh b/build/mkdeps.sh
index d7516fe..5884aa5 100755
--- a/build/mkdeps.sh
+++ b/build/mkdeps.sh
@@ -1,8 +1,20 @@
 #!/bin/sh
 #
+# A script to generate compile dependencies for Fortran files.
+#
+# Usage:
+#
+#   mkdep.sh (FORTRAN_SOURCE_FILE_PATH) (OBJECT_FILE_PATH)
+#
+# Example:
+#
+#   mkdep.sh ../src ./obj
+#
+# Requirements: awk, sort, uniq
+#
 files=`ls $1/*.F90`
 for src in $files; do
-  deps=`grep -i '  use ' $src | awk '{ print $2 }' | sed 's/,//g' | sort | uniq`
+  deps=`awk '/^\s*[Uu][Ss][Ee] / {gsub ( "[:,]","" ) ; print $2}' $src | sort | uniq`
   fname=`basename $src .F90`
   output="$2/${fname}.o: $src"
   for dep in $deps; do