Index: /branches/pap_branch_070920/psModules/src/camera/pmFPAfileDefine.c
===================================================================
--- /branches/pap_branch_070920/psModules/src/camera/pmFPAfileDefine.c	(revision 15123)
+++ /branches/pap_branch_070920/psModules/src/camera/pmFPAfileDefine.c	(revision 15124)
@@ -286,5 +286,5 @@
         }
         const char *typeString = psMetadataLookupStr(NULL, scheme, "COMPRESSION"); // Compression type
-        if (!typeString || strlen(typeString)) {
+        if (!typeString || strlen(typeString) == 0) {
             psWarning("Can't find COMPRESSION in FITS scheme %s --- compression disabled.", fitsType);
             goto COMPRESSION_DONE;