diff --git a/keyboards/aeboards/constellation/rules.mk b/keyboards/aeboards/constellation/rules.mk
deleted file mode 100755
index bd2af5d22bf7..000000000000
--- a/keyboards/aeboards/constellation/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = aeboards/constellation/rev1
diff --git a/keyboards/bpiphany/pegasushoof/rules.mk b/keyboards/bpiphany/pegasushoof/rules.mk
deleted file mode 100644
index 20adecaa08ac..000000000000
--- a/keyboards/bpiphany/pegasushoof/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER=bpiphany/pegasushoof/2013
diff --git a/keyboards/dp3000/rules.mk b/keyboards/dp3000/rules.mk
deleted file mode 100644
index 0f44aefd4458..000000000000
--- a/keyboards/dp3000/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = dp3000/rev1
diff --git a/keyboards/eek/rules.mk b/keyboards/eek/rules.mk
deleted file mode 100644
index 65b8265b5305..000000000000
--- a/keyboards/eek/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = eek/silk_down
diff --git a/keyboards/exclusive/e85/rules.mk b/keyboards/exclusive/e85/rules.mk
deleted file mode 100644
index 8eef46d0ab44..000000000000
--- a/keyboards/exclusive/e85/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = exclusive/e85/hotswap
diff --git a/keyboards/keebio/dsp40/rules.mk b/keyboards/keebio/dsp40/rules.mk
deleted file mode 100644
index 3e8e9be18c3b..000000000000
--- a/keyboards/keebio/dsp40/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = keebio/dsp40/rev1
diff --git a/keyboards/keycapsss/plaid_pad/rules.mk b/keyboards/keycapsss/plaid_pad/rules.mk
deleted file mode 100644
index 0ab7cc3141a1..000000000000
--- a/keyboards/keycapsss/plaid_pad/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = keycapsss/plaid_pad/rev1
diff --git a/keyboards/kprepublic/jj40/rules.mk b/keyboards/kprepublic/jj40/rules.mk
deleted file mode 100644
index fa09523958c8..000000000000
--- a/keyboards/kprepublic/jj40/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = kprepublic/jj40/rev1
diff --git a/keyboards/kprepublic/jj50/rules.mk b/keyboards/kprepublic/jj50/rules.mk
deleted file mode 100644
index 8f77c68db25d..000000000000
--- a/keyboards/kprepublic/jj50/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = kprepublic/jj50/rev1
diff --git a/keyboards/lfkeyboards/lfk78/rules.mk b/keyboards/lfkeyboards/lfk78/rules.mk
deleted file mode 100644
index 5ebd387c834d..000000000000
--- a/keyboards/lfkeyboards/lfk78/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = lfkeyboards/lfk78/revj
diff --git a/keyboards/lfkeyboards/smk65/rules.mk b/keyboards/lfkeyboards/smk65/rules.mk
deleted file mode 100644
index b2d749766322..000000000000
--- a/keyboards/lfkeyboards/smk65/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = lfkeyboards/smk65/revb
diff --git a/keyboards/mechlovin/adelais/rgb_led/rules.mk b/keyboards/mechlovin/adelais/rgb_led/rules.mk
deleted file mode 100644
index 18047f12c7e6..000000000000
--- a/keyboards/mechlovin/adelais/rgb_led/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = mechlovin/adelais/rgb_led/rev1
diff --git a/keyboards/mechlovin/adelais/standard_led/rules.mk b/keyboards/mechlovin/adelais/standard_led/rules.mk
deleted file mode 100644
index a1d2ba038de2..000000000000
--- a/keyboards/mechlovin/adelais/standard_led/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = mechlovin/adelais/standard_led/arm/rev2
diff --git a/keyboards/mechlovin/delphine/rules.mk b/keyboards/mechlovin/delphine/rules.mk
deleted file mode 100644
index 819bce1cd3d5..000000000000
--- a/keyboards/mechlovin/delphine/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = mechlovin/delphine/mono_led
diff --git a/keyboards/mechlovin/hannah60rgb/rules.mk b/keyboards/mechlovin/hannah60rgb/rules.mk
deleted file mode 100644
index e876a56afb5e..000000000000
--- a/keyboards/mechlovin/hannah60rgb/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = mechlovin/hannah60rgb/rev1
diff --git a/keyboards/mechlovin/hannah910/rules.mk b/keyboards/mechlovin/hannah910/rules.mk
deleted file mode 100644
index a35686719722..000000000000
--- a/keyboards/mechlovin/hannah910/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = mechlovin/hannah910/rev1
diff --git a/keyboards/mechlovin/hex4b/rules.mk b/keyboards/mechlovin/hex4b/rules.mk
deleted file mode 100644
index e3d9ab46b44f..000000000000
--- a/keyboards/mechlovin/hex4b/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = mechlovin/hex4b/rev1
diff --git a/keyboards/melgeek/z70ultra/rules.mk b/keyboards/melgeek/z70ultra/rules.mk
deleted file mode 100644
index 8cc384b91f76..000000000000
--- a/keyboards/melgeek/z70ultra/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = melgeek/z70ultra/rev1
diff --git a/keyboards/montsinger/rebound/rules.mk b/keyboards/montsinger/rebound/rules.mk
deleted file mode 100644
index d277d184e189..000000000000
--- a/keyboards/montsinger/rebound/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = montsinger/rebound/rev1
diff --git a/keyboards/polilla/rules.mk b/keyboards/polilla/rules.mk
deleted file mode 100644
index 0d72c40bb6a3..000000000000
--- a/keyboards/polilla/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = polilla/rev1
\ No newline at end of file
diff --git a/keyboards/primekb/prime_l/rules.mk b/keyboards/primekb/prime_l/rules.mk
deleted file mode 100644
index 235bfea92592..000000000000
--- a/keyboards/primekb/prime_l/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = primekb/prime_l/v1
diff --git a/keyboards/projectkb/alice/rules.mk b/keyboards/projectkb/alice/rules.mk
deleted file mode 100644
index d6725769928b..000000000000
--- a/keyboards/projectkb/alice/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = projectkb/alice/rev1
diff --git a/keyboards/rgbkb/pan/rev1/rules.mk b/keyboards/rgbkb/pan/rev1/rules.mk
deleted file mode 100644
index 4d3c0f6679a0..000000000000
--- a/keyboards/rgbkb/pan/rev1/rules.mk
+++ /dev/null
@@ -1,2 +0,0 @@
-# The default configuration is a atmega32a
-DEFAULT_FOLDER = rgbkb/pan/rev1/32a
diff --git a/keyboards/tkw/stoutgat/v2/rules.mk b/keyboards/tkw/stoutgat/v2/rules.mk
deleted file mode 100644
index 1a660af26c98..000000000000
--- a/keyboards/tkw/stoutgat/v2/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = tkw/stoutgat/v2/f411
diff --git a/keyboards/whale/sk/rules.mk b/keyboards/whale/sk/rules.mk
deleted file mode 100644
index 1a4ddedfa733..000000000000
--- a/keyboards/whale/sk/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = whale/sk/v3
diff --git a/keyboards/ymdk/melody96/rules.mk b/keyboards/ymdk/melody96/rules.mk
deleted file mode 100644
index 806543977bf0..000000000000
--- a/keyboards/ymdk/melody96/rules.mk
+++ /dev/null
@@ -1 +0,0 @@
-DEFAULT_FOLDER = ymdk/melody96/soldered