diff --git a/src/ttf2pt1/pt1.c b/src/ttf2pt1/pt1.c
index 1ecdaa0..27f40de 100644
--- a/src/ttf2pt1/pt1.c
+++ b/src/ttf2pt1/pt1.c
@@ -4993,7 +4993,8 @@ printseg(
 
 double
 fdotsegdist2(
-	double seg[2][2 /*X,Y*/],
+	double** seg,
+	// double seg[2][2 /*X,Y*/],
 	double dot[2 /*X,Y*/]
 )
 {
@@ -5216,13 +5217,13 @@ fdotcurvdist2(
 		/* the nearest segment must include the nearest dot */
 		if(id1==0) {
 			dots[d].seg = 0;
-			dots[d].dist2 = fdotsegdist2(&cvd[0], dots[d].p);
+			dots[d].dist2 = fdotsegdist2((double**)&cvd[0], dots[d].p);
 		} else if(id1==NAPSECT) {
 			dots[d].seg = NAPSECT-1;
-			dots[d].dist2 = fdotsegdist2(&cvd[NAPSECT-1], dots[d].p);
+			dots[d].dist2 = fdotsegdist2((double**)&cvd[NAPSECT-1], dots[d].p);
 		} else {
-			dist1 = fdotsegdist2(&cvd[id1], dots[d].p);
-			dist2 = fdotsegdist2(&cvd[id1-1], dots[d].p);
+			dist1 = fdotsegdist2((double**)&cvd[id1], dots[d].p);
+			dist2 = fdotsegdist2((double**)&cvd[id1-1], dots[d].p);
 			if(dist2 < dist1) {
 				dots[d].seg = id1-1;
 				dots[d].dist2 = dist2;
@@ -5469,7 +5470,7 @@ fjointsin2(
 		d[0][axis] = -( d[1][axis] *= scale1 );
 		d[2][axis] *= scale2;
 	}
-	return fdotsegdist2(d, d[2]);
+	return fdotsegdist2((double**)d, d[2]);
 }
 
 #if 0
@@ -5661,7 +5662,7 @@ fanalyzege(
 			dots[1][i] = ge->fpoints[i][2];
 			dots[2][i] = fcvval(ge, i, 0.5);
 		}
-		avsd2 = fdotsegdist2(dots, dots[2]);
+		avsd2 = fdotsegdist2((double**)dots, dots[2]);
 		if(avsd2 <= CVEPS2) {
 			gex->flags |= GEXF_FLAT;
 		}
@@ -5821,7 +5822,7 @@ fanalyzejoint(
 			dots[1][i] = nge->fpoints[i][2];
 			dots[2][i] = ge->fpoints[i][2];
 		}
-		if( fdotsegdist2(dots, dots[2]) <= CVEPS2)
+		if( fdotsegdist2((double**)dots, dots[2]) <= CVEPS2)
 			gex->flags |= GEXF_JLINE;
 	}
 }
@@ -6201,7 +6202,7 @@ fconcisecontour(
 				}
 				ndots++;
 				for(i=0; i<ndots; i++) {
-					avsd2 = fdotsegdist2(apcv, dots[i].p);
+					avsd2 = fdotsegdist2((double**)apcv, dots[i].p);
 					if(avsd2 > CVEPS2)
 						break;
 				}
@@ -6229,7 +6230,7 @@ fconcisecontour(
 				}
 				ndots++;
 				for(i=0; i<ndots; i++) {
-					avsd2 = fdotsegdist2(apcv, dots[i].p);
+					avsd2 = fdotsegdist2((double**)apcv, dots[i].p);
 					if(avsd2 > CVEPS2)
 						break;
 				}
diff --git a/src/ttf2pt1/pt1.h b/src/ttf2pt1/pt1.h
index 4f65f88..6920315 100644
--- a/src/ttf2pt1/pt1.h
+++ b/src/ttf2pt1/pt1.h
@@ -252,6 +252,7 @@ void print_kerning( FILE *afm_file);
 int fcrossrayscv( double curve[4][2], double *max1, double *max2);
 int fcrossraysge( GENTRY *ge1, GENTRY *ge2, double *max1, double *max2,
 	double crossdot[2][2]);
-double fdotsegdist2( double seg[2][2], double dot[2]);
+// double fdotsegdist2( double seg[2][2], double dot[2]);
+double fdotsegdist2( double** seg, double dot[2]);
 double fdotcurvdist2( double curve[4][2], struct dot_dist *dots, int ndots, double *maxp);
 void fapproxcurve( double cv[4][2], struct dot_dist *dots, int ndots);