diff --git a/src/fileFormats/ensight/file/ensightFile.C b/src/fileFormats/ensight/file/ensightFile.C
index 8f9b28d555bb5a0cb47b44f7ebf7121bdfab2be2..ac552d911db8145569dd005384bb9c2b990f50a6 100644
--- a/src/fileFormats/ensight/file/ensightFile.C
+++ b/src/fileFormats/ensight/file/ensightFile.C
@@ -165,8 +165,15 @@ Foam::Ostream& Foam::ensightFile::write
 
 Foam::Ostream& Foam::ensightFile::write(const char* value)
 {
+    // Parentheses around strncpy to silence the GCC -Wstringop-truncation
+    // warning, which is spurious here.
+    // The max-size and buffer-size *are* identical, which means the buffer
+    // may not have a nul terminator. However, this is properly handled in
+    // the subsequent binary write and the ASCII write explicitly adds
+    // a nul terminator.
+
     char buf[80];
-    strncpy(buf, value, 80); // max 80 chars or padded with nul if smaller
+    (strncpy(buf, value, 80)); // max 80 chars or padded with nul if smaller
 
     if (format() == IOstream::BINARY)
     {