Index: trunk/psLib/src/fits/psFitsScale.c
===================================================================
--- trunk/psLib/src/fits/psFitsScale.c	(revision 17048)
+++ trunk/psLib/src/fits/psFitsScale.c	(revision 17447)
@@ -41,8 +41,8 @@
     )
 {
-    assert(bscale);
-    assert(bzero);
-    assert(image);
-    assert(options);
+    psAssert(bscale, "impossible");
+    psAssert(bzero, "impossible");
+    psAssert(image, "impossible");
+    psAssert(options, "impossible");
 
     double range = pow(2.0, options->bitpix); // Range of values for target BITPIX
@@ -101,8 +101,8 @@
     )
 {
-    assert(bscale);
-    assert(bzero);
-    assert(image);
-    assert(options);
+    psAssert(bscale, "impossible");
+    psAssert(bzero, "impossible");
+    psAssert(image, "impossible");
+    psAssert(options, "impossible");
 
     // Measure the mean and stdev