diff --git a/src/idl/dustem_filter2instru.pro b/src/idl/dustem_filter2instru.pro
index 7775a57..723b781 100755
--- a/src/idl/dustem_filter2instru.pro
+++ b/src/idl/dustem_filter2instru.pro
@@ -44,11 +44,11 @@ Nfilt=n_elements(filter)
 
 ind1=lonarr(Nfilt)
 FOR i=0L,Nfilt-1 DO BEGIN
-  ind=where(!dustem_instrument_description.filter EQ strtrim(filter(i),2),count)
+  ind=where(!dustem_instrument_description.filter EQ strtrim(filter[i],2),count)
   IF count EQ 0 THEN BEGIN
     message,'Filter: '+strtrim(filter(i),2)+' not found in instrument_description.xcat'
   ENDIF
-  ind1(i)=ind(0)
+  ind1[i]=ind[0]
 ENDFOR
 
 instru=!dustem_instrument_description(ind1).instru
--
libgit2 0.21.2