diff --git a/Netdisco/bin/netdisco-daemon-fg b/Netdisco/bin/netdisco-daemon-fg
index 6b763ab6..6e2cbe49 100755
--- a/Netdisco/bin/netdisco-daemon-fg
+++ b/Netdisco/bin/netdisco-daemon-fg
@@ -12,6 +12,9 @@ BEGIN {
   unshift @INC,
     dir($FindBin::RealBin)->parent->subdir('lib')->stringify,
     dir($FindBin::RealBin, 'lib')->stringify;
+
+  unshift @INC,
+    split m/:/, ($ENV{NETDISCO_INC} || '');
 }
 
 use App::Netdisco;
diff --git a/Netdisco/bin/netdisco-web-fg b/Netdisco/bin/netdisco-web-fg
index 7b31bf26..0a163bf5 100755
--- a/Netdisco/bin/netdisco-web-fg
+++ b/Netdisco/bin/netdisco-web-fg
@@ -18,6 +18,9 @@ BEGIN {
   unshift @INC,
     dir($FindBin::RealBin)->parent->subdir('lib')->stringify,
     dir($FindBin::RealBin, 'lib')->stringify;
+
+  unshift @INC,
+    split m/:/, ($ENV{NETDISCO_INC} || '');
 }
 
 use App::Netdisco;