diff --git a/stim/envi/bsq.h b/stim/envi/bsq.h
index 958517c..bd6b529 100644
--- a/stim/envi/bsq.h
+++ b/stim/envi/bsq.h
@@ -92,8 +92,11 @@ public:
 	bool band( T * p, double wavelength, bool PROGRESS = false){
 		if(PROGRESS) progress = 0;
 		//if there are no wavelengths in the BSQ file
-		if(w.size() == 0)
-			return band_index(p, (unsigned long long)wavelength);
+		if(w.size() == 0){
+			band_index(p, (unsigned long long)wavelength);
+			if(PROGRESS) progress = 100;
+			return true;
+		}
 
 		unsigned long long XY = X() * Y();	//calculate the number of pixels in a band
 		unsigned long long page = 0;
--
libgit2 0.21.4