diff --git a/Makefile.MinGW b/Makefile.MinGW
index 3fc89c3a7..2a17a8bb6 100644
--- a/Makefile.MinGW
+++ b/Makefile.MinGW
@@ -3,7 +3,7 @@
 CC = /mingw/bin/gcc
 FC = g95
 CFLAGS = -I. -fPIC
-FFLAGS = -Wall -Wno-precisiion-loss -fbounds-check -fPIC
+FFLAGS = -Wall -Wno-precision-loss -fbounds-check -fPIC
 
 .f.o:
 	${FC} ${CPPFLAGS} ${FFLAGS} -c -o ${<:.f=.o} $<
diff --git a/ftn_init.F90 b/ftn_init.F90
index e6a3e05fe..8694650f1 100644
--- a/ftn_init.F90
+++ b/ftn_init.F90
@@ -1,6 +1,6 @@
 ! Fortran logical units used in WSJT6
 !
-!   10
+!   10  binary input data, *.tf2 files
 !   11  decoded.txt
 !   12  decoded.ave
 !   13  tsky.dat
diff --git a/getfile2.F90 b/getfile2.F90
index 4d2b17e3c..3b25f8e36 100644
--- a/getfile2.F90
+++ b/getfile2.F90
@@ -43,8 +43,8 @@ subroutine getfile2(fname,len)
   ka=0.1*NSMAX
   kb=0.8*NSMAX
   do k=ka,kb
-     sq=sq + float(int(id(1,k,1)))**2 + float(int(id(1,k,1)))**2 +    &
-          float(int(id(1,k,1)))**2 + float(int(id(1,k,1)))**2
+     sq=sq + float(int(id(1,k,1)))**2 + float(int(id(2,k,1)))**2 +    &
+          float(int(id(3,k,1)))**2 + float(int(id(4,k,1)))**2
   enddo
   sqave=174*sq/(kb-ka+1)
   rxnoise=10.0*log10(sqave) - 48.0
@@ -52,6 +52,5 @@ subroutine getfile2(fname,len)
   ndiskdat=1
   mousebutton=0
 
-999 close(10)
-  return
+999 return
 end subroutine getfile2
diff --git a/map65.py b/map65.py
index 87e2f99f7..7b5bdb029 100644
--- a/map65.py
+++ b/map65.py
@@ -1,4 +1,4 @@
-#------------------------------------------------------------------- MAP65
+#-------------------------------------------------------------------- MAP65
 # $Date$ $Revision$
 #
 from Tkinter import *