diff --git a/iiab-install b/iiab-install
index 87dfda526..8f2222d34 100755
--- a/iiab-install
+++ b/iiab-install
@@ -74,7 +74,7 @@ fi
 # Subroutine compares software version numbers.  Generates rare false positives
 # like "1.0 > 1" and "2.4.0 > 2.4".  Avoid risks by structuring conditionals w/
 # a consistent # of decimal points e.g. "if version_gt w.x.y.z a.b.c.d; then"
-function version_gt() { [ "$(printf '%s\n' "$@" | sort -V | head -1)" != "$1" ]; }
+version_gt () { [ "$(printf '%s\n' "$@" | sort -V | head -1)" != "$1" ]; }
 
 # Verify that Raspbian is running a recent enough kernel.  As Raspbian
 # updates on 4.9.41-v7+ broke bridging, WiFi AP & OpenVPN in Oct/Nov 2017.