diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak
index 7a19863b18e6e4604c9d6cbed0730d407889070f..e1243602e992397d16decbee1c3ff40437fb62ea 100644
--- a/default-configs/arm-softmmu.mak
+++ b/default-configs/arm-softmmu.mak
@@ -3,7 +3,6 @@
 include pci.mak
 include usb.mak
 CONFIG_VGA=y
-CONFIG_ISA_MMIO=y
 CONFIG_NAND=y
 CONFIG_ECC=y
 CONFIG_SERIAL=y
diff --git a/default-configs/ppc-softmmu.mak b/default-configs/ppc-softmmu.mak
index 4befde3c7ca3c626d9a442fd10a85bc7db2c531c..d4d0f9b1925b0c49bca95ed24f63b17586071087 100644
--- a/default-configs/ppc-softmmu.mak
+++ b/default-configs/ppc-softmmu.mak
@@ -3,7 +3,6 @@
 include pci.mak
 include sound.mak
 include usb.mak
-CONFIG_ISA_MMIO=y
 CONFIG_ESCC=y
 CONFIG_M48T59=y
 CONFIG_SERIAL=y
diff --git a/default-configs/ppc64-softmmu.mak b/default-configs/ppc64-softmmu.mak
index c4be59f638ed6de2ccf0451285e5369091051840..db5a4d6f5eea20d98225df3b3573e69159d9e06f 100644
--- a/default-configs/ppc64-softmmu.mak
+++ b/default-configs/ppc64-softmmu.mak
@@ -4,7 +4,6 @@ include pci.mak
 include sound.mak
 include usb.mak
 CONFIG_VIRTIO_VGA=y
-CONFIG_ISA_MMIO=y
 CONFIG_ESCC=y
 CONFIG_M48T59=y
 CONFIG_SERIAL=y
diff --git a/default-configs/sparc64-softmmu.mak b/default-configs/sparc64-softmmu.mak
index 123bb993ef567168649a69fc39060145c6838c5b..c0cdd644c8e7462f5ec6bf8a05e65ec5ae43f372 100644
--- a/default-configs/sparc64-softmmu.mak
+++ b/default-configs/sparc64-softmmu.mak
@@ -2,7 +2,6 @@
 
 include pci.mak
 include usb.mak
-CONFIG_ISA_MMIO=y
 CONFIG_M48T59=y
 CONFIG_PTIMER=y
 CONFIG_SERIAL=y