diff --git a/acinclude.m4 b/acinclude.m4
index e32c09bc9..dece48c2a 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -41,12 +41,12 @@ int main() {
   int major, minor1, minor2;
   sscanf(pcap_version,"%d.%d.%d", &major, &minor1, &minor2);
   if (major > 0) 
-    exit(0);
+    return 0;
   if (minor1 < 9)
-    exit(1);
+    return 1;
   if (minor2 < 4)
-    exit(1);
-  exit(0);
+    return 1;
+  return 0;
 }
   ], [
     AC_TRY_RUN([
diff --git a/configure b/configure
index 2d0ee75f5..b93cf600c 100755
--- a/configure
+++ b/configure
@@ -6313,12 +6313,12 @@ int main() {
   int major, minor1, minor2;
   sscanf(pcap_version,"%d.%d.%d", &major, &minor1, &minor2);
   if (major > 0)
-    exit(0);
+    return 0;
   if (minor1 < 9)
-    exit(1);
+    return 1;
   if (minor2 < 4)
-    exit(1);
-  exit(0);
+    return 1;
+  return 0;
 }
 
 _ACEOF
diff --git a/ncat/configure b/ncat/configure
index 1b87c4fe1..f126ce03f 100755
--- a/ncat/configure
+++ b/ncat/configure
@@ -4793,12 +4793,12 @@ int main() {
   int major, minor1, minor2;
   sscanf(pcap_version,"%d.%d.%d", &major, &minor1, &minor2);
   if (major > 0)
-    exit(0);
+    return 0;
   if (minor1 < 9)
-    exit(1);
+    return 1;
   if (minor2 < 4)
-    exit(1);
-  exit(0);
+    return 1;
+  return 0;
 }
 
 _ACEOF
diff --git a/nping/configure b/nping/configure
index 3cf3763c0..292727d7e 100755
--- a/nping/configure
+++ b/nping/configure
@@ -5233,12 +5233,12 @@ int main() {
   int major, minor1, minor2;
   sscanf(pcap_version,"%d.%d.%d", &major, &minor1, &minor2);
   if (major > 0)
-    exit(0);
+    return 0;
   if (minor1 < 9)
-    exit(1);
+    return 1;
   if (minor2 < 4)
-    exit(1);
-  exit(0);
+    return 1;
+  return 0;
 }
 
 _ACEOF