diff --git a/src/include/ngspice/cktdefs.h b/src/include/ngspice/cktdefs.h
index 555f685d7..44fe270a5 100644
--- a/src/include/ngspice/cktdefs.h
+++ b/src/include/ngspice/cktdefs.h
@@ -415,6 +415,9 @@ extern int NIsenReinit(CKTcircuit *);
 extern int NIdIter (CKTcircuit *);
 extern void NInzIter(CKTcircuit *, int, int);
 
+#ifdef PREDICTOR
+extern int NIpred(CKTcircuit *ckt);
+#endif
 
 extern IFfrontEnd *SPfrontEnd;
 
diff --git a/src/maths/ni/Makefile.am b/src/maths/ni/Makefile.am
index d343a7aef..a6fb60f98 100644
--- a/src/maths/ni/Makefile.am
+++ b/src/maths/ni/Makefile.am
@@ -13,7 +13,6 @@ libni_la_SOURCES = \
 		niiter.c	\
 		niniter.c	\
 		nipred.c	\
-		nipred.h	\
 		nipzmeth.c	\
 		nireinit.c	\
 		nisenre.c
diff --git a/src/maths/ni/nipred.c b/src/maths/ni/nipred.c
index e5c96b79d..42930f7a9 100644
--- a/src/maths/ni/nipred.c
+++ b/src/maths/ni/nipred.c
@@ -17,8 +17,6 @@ Author: 1985 Thomas L. Quarles
 #include "ngspice/cktdefs.h"
 #include "ngspice/sperror.h"
 #include "ngspice/smpdefs.h"
-#include "nipred.h"
-
 
 #ifdef PREDICTOR
 int
diff --git a/src/maths/ni/nipred.h b/src/maths/ni/nipred.h
deleted file mode 100644
index 8c037d403..000000000
--- a/src/maths/ni/nipred.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*************
- * Header file for nipred.c
- * 1999 E. Rouat
- ************/
-
-#ifndef NIPRED_H_INCLUDED
-#define NIPRED_H_INCLUDED
-
-#ifdef PREDICTOR
-
-int NIpred(register CKTcircuit * ckt);
-
-#endif /* PREDICTOR */
-
-#endif
diff --git a/src/spicelib/analysis/dctran.c b/src/spicelib/analysis/dctran.c
index 1b20bf028..f4ed6074c 100644
--- a/src/spicelib/analysis/dctran.c
+++ b/src/spicelib/analysis/dctran.c
@@ -34,10 +34,6 @@ extern struct dbcomm *dbs;
 #include "ngspice/cluster.h"
 #endif
 
-#ifdef PREDICTOR
-#include "../maths/ni/nipred.h"
-#endif /* PREDICTOR */
-
 #ifdef HAS_WINDOWS    /* hvogt 10.03.99, nach W. Mues */
 void SetAnalyse(char * Analyse, int Percent);
 #endif
diff --git a/visualc/vngspice.vcproj b/visualc/vngspice.vcproj
index 52a99d641..eaf5cf927 100644
--- a/visualc/vngspice.vcproj
+++ b/visualc/vngspice.vcproj
@@ -2548,10 +2548,6 @@
 				RelativePath="..\src\include\ngspice\ngspice.h"
 				>
 			</File>
-			<File
-				RelativePath="..\src\maths\ni\nipred.h"
-				>
-			</File>
 			<File
 				RelativePath="..\src\include\ngspice\noisedef.h"
 				>