diff --git a/keywords.txt b/keywords.txt
index d80bac0..7c2f303 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -23,14 +23,14 @@ MajorPeak	KEYWORD2
 # Constants (LITERAL1)
 #######################################
 
-twoPi LITERAL1
-fourPi  LITERAL1
-FFT_FORWARD LITERAL1
-FFT_REVERSE LITERAL1
-FFT_WIN_TYP_RECTANGLE LITERAL1
-FFT_WIN_TYP_HAMMING   LITERAL1
-FFT_WIN_TYP_HANN  LITERAL1
-FFT_WIN_TYP_TRIANGLE  LITERAL1
-FFT_WIN_TYP_BLACKMAN  LITERAL1
-FFT_WIN_TYP_FLT_TOP LITERAL1
-FFT_WIN_TYP_WELCH LITERAL1
+twoPi	LITERAL1
+fourPi	LITERAL1
+FFT_FORWARD	LITERAL1
+FFT_REVERSE	LITERAL1
+FFT_WIN_TYP_RECTANGLE	LITERAL1
+FFT_WIN_TYP_HAMMING	LITERAL1
+FFT_WIN_TYP_HANN	LITERAL1
+FFT_WIN_TYP_TRIANGLE	LITERAL1
+FFT_WIN_TYP_BLACKMAN	LITERAL1
+FFT_WIN_TYP_FLT_TOP	LITERAL1
+FFT_WIN_TYP_WELCH	LITERAL1