diff --git a/bwt_gen/bwt_gen.c b/bwt_gen/bwt_gen.c
index 9d881f0..b187c18 100644
--- a/bwt_gen/bwt_gen.c
+++ b/bwt_gen/bwt_gen.c
@@ -306,7 +306,6 @@ BWTInc *BWTIncCreate(const unsigned int textLength, const float targetNBit,
 		bwtInc->packedShift[i] = BITS_IN_WORD - (i+1) * BIT_PER_CHAR;
 	}
 
-	bwtInc->targetTextLength = textLength;
 	bwtInc->availableWord = (unsigned int)((textLength + OCC_INTERVAL - 1) / OCC_INTERVAL * OCC_INTERVAL / BITS_IN_WORD * bwtInc->targetNBit);
 	if (bwtInc->availableWord < BWTResidentSizeInWord(textLength) + BWTOccValueMinorSizeInWord(textLength)) {
 		fprintf(stderr, "BWTIncCreate() : targetNBit is too low!\n");
diff --git a/bwt_gen/bwt_gen.h b/bwt_gen/bwt_gen.h
index 8461418..fe7fcf9 100644
--- a/bwt_gen/bwt_gen.h
+++ b/bwt_gen/bwt_gen.h
@@ -72,7 +72,6 @@ typedef struct BWT {
 	unsigned int bwtSizeInWord;			// Temporary variable to hold the memory allocated
 	unsigned int occSizeInWord;			// Temporary variable to hold the memory allocated
 	unsigned int occMajorSizeInWord;	// Temporary variable to hold the memory allocated
-	unsigned int saIndexRangeSize;		// Temporary variable to hold the memory allocated
 } BWT;
 
 typedef struct BWTInc {
@@ -80,7 +79,6 @@ typedef struct BWTInc {
 	unsigned int numberOfIterationDone;
 	unsigned int *cumulativeCountInCurrentBuild;
 	unsigned int availableWord;
-	unsigned int targetTextLength;
 	float targetNBit;
 	unsigned int buildSize;
 	unsigned int initialMaxBuildSize;