diff --git a/cmProc4.c b/cmProc4.c
index d29640f..89fe6d5 100644
--- a/cmProc4.c
+++ b/cmProc4.c
@@ -4559,8 +4559,8 @@ cmRC_t cmGoertzelExec( cmGoertzel* p, const cmSample_t* x, unsigned procSmpCnt,
   {
     cmGoertzelCh* ch = p->ch + i;
     
-    ch->s1 = x[0];
-    ch->s2 = x[1] + 2 * x[0] * ch->coeff;
+    ch->s2 = x[0];
+    ch->s1 = x[1] + 2 * x[0] * ch->coeff;
     for(j=2; j<procSmpCnt; ++j)
     {
       ch->s0 = x[j] + ch->coeff * ch->s1 - ch->s2;
@@ -4573,3 +4573,5 @@ cmRC_t cmGoertzelExec( cmGoertzel* p, const cmSample_t* x, unsigned procSmpCnt,
 
   return cmOkRC;
 }
+
+
diff --git a/cmProc4.h b/cmProc4.h
index 5a68ffa..3514e3e 100644
--- a/cmProc4.h
+++ b/cmProc4.h
@@ -723,7 +723,6 @@ extern "C" {
   cmRC_t cmGoertzelExec( cmGoertzel* p, const cmSample_t* in, unsigned procSmpCnt,  double* outV, unsigned chCnt );
 
 
-
 #ifdef __cplusplus
 }
 #endif