diff --git a/data/borders/Kenya.poly b/data/borders/Kenya.poly
index 1a4e692699..13b419d4a2 100644
--- a/data/borders/Kenya.poly
+++ b/data/borders/Kenya.poly
@@ -5067,7 +5067,7 @@ Kenya
 	3.391796e+01	8.173000e-02
 	3.392074e+01	6.505250e-02
 	3.393574e+01	1.849950e-02
-	3.393756e+01	-6.361109e-15
+	3.393756e+01	-3.180555e-15
 	3.394448e+01	-2.664490e-02
 	3.395896e+01	-8.229440e-02
 	3.396510e+01	-1.011325e-01
diff --git a/data/borders/Maldives.poly b/data/borders/Maldives.poly
index ae59e061ea..5afed4d0a2 100644
--- a/data/borders/Maldives.poly
+++ b/data/borders/Maldives.poly
@@ -3527,7 +3527,7 @@ END
 	7.311478e+01	6.000000e-03
 	7.311932e+01	4.000000e-03
 	7.312419e+01	2.000000e-03
-	7.312946e+01	-6.361109e-15
+	7.312946e+01	-3.180555e-15
 	7.313228e+01	-1.000000e-03
 	7.313837e+01	-3.000000e-03
 	7.314169e+01	-4.000000e-03
@@ -3550,7 +3550,7 @@ END
 	7.325450e+01	-4.000000e-03
 	7.325781e+01	-3.000000e-03
 	7.326390e+01	-1.000000e-03
-	7.326795e+01	-6.361109e-15
+	7.326795e+01	-3.180555e-15
 	7.327259e+01	1.000000e-03
 	7.327676e+01	2.000000e-03
 	7.328058e+01	3.000000e-03
diff --git a/data/borders/Sao Tome and Principe.poly b/data/borders/Sao Tome and Principe.poly
index f1df600e8c..d50093be0e 100644
--- a/data/borders/Sao Tome and Principe.poly	
+++ b/data/borders/Sao Tome and Principe.poly	
@@ -373,7 +373,7 @@ Sao Tome and Principe
 	6.308296e+00	1.200000e-02
 	6.309070e+00	8.000000e-03
 	6.309929e+00	4.000000e-03
-	6.310875e+00	-6.361109e-15
+	6.310875e+00	-3.180555e-15
 	6.311908e+00	-4.000000e-03
 	6.313029e+00	-8.000000e-03
 	6.314241e+00	-1.200000e-02
diff --git a/data/borders/Uganda.poly b/data/borders/Uganda.poly
index 0be00db69e..7f82955f3b 100644
--- a/data/borders/Uganda.poly
+++ b/data/borders/Uganda.poly
@@ -10434,7 +10434,7 @@ Uganda
 	3.391796e+01	8.173000e-02
 	3.392074e+01	6.505250e-02
 	3.393574e+01	1.849950e-02
-	3.393756e+01	-6.361109e-15
+	3.393756e+01	-3.180555e-15
 	3.394448e+01	-2.664490e-02
 	3.395896e+01	-8.229440e-02
 	3.396510e+01	-1.011325e-01