diff --git a/src/spicelib/devices/ind/mutsetup.c b/src/spicelib/devices/ind/mutsetup.c
index 16bce77c7..b623be039 100644
--- a/src/spicelib/devices/ind/mutsetup.c
+++ b/src/spicelib/devices/ind/mutsetup.c
@@ -47,17 +47,17 @@ MUTsetup(SMPmatrix *matrix, GENmodel *inModel, CKTcircuit *ckt, int *states)
                 here->MUTind1 = (INDinstance *) CKTfndDev(ckt, here->MUTindName1);
             if (!here->MUTind1) {
                 SPfrontEnd->IFerrorf (ERR_FATAL,
-                                      "%s: coupling to non-existant inductor %s.",
+                                      "%s: coupling to non-existent inductor %s.",
                                       here->MUTname, here->MUTindName1);
-                return(E_INTERN); /* We have to leave, or TSTALLOC will segfault */
+                return(E_NOTFOUND); /* We have to leave, or TSTALLOC will segfault */
             }
             if (!here->MUTind2)
                 here->MUTind2 = (INDinstance *) CKTfndDev(ckt, here->MUTindName2);
             if (!here->MUTind2) {
                 SPfrontEnd->IFerrorf (ERR_FATAL,
-                                      "%s: coupling to non-existant inductor %s.",
+                                      "%s: coupling to non-existent inductor %s.",
                                       here->MUTname, here->MUTindName2);
-                return(E_INTERN);
+                return(E_NOTFOUND);
             }
 
             TSTALLOC(MUTbr1br2Ptr, MUTind1->INDbrEq, MUTind2->INDbrEq);