diff --git a/cpu/mcf5227x/config.mk b/cpu/mcf5227x/config.mk
index 8d60fd6..8eab49d 100644
--- a/cpu/mcf5227x/config.mk
+++ b/cpu/mcf5227x/config.mk
@@ -24,8 +24,8 @@
 #
 
 PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
-ifeq ($(findstring 4.2,$(shell $(CC) --version)),4.2)
-PLATFORM_CPPFLAGS += -mcpu=5208 -fPIC
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
+PLATFORM_CPPFLAGS += -mcpu=52277 -fPIC
 else
 PLATFORM_CPPFLAGS += -m5307 -fPIC
 endif
diff --git a/cpu/mcf523x/config.mk b/cpu/mcf523x/config.mk
index 93645a3..fc79454 100644
--- a/cpu/mcf523x/config.mk
+++ b/cpu/mcf523x/config.mk
@@ -24,7 +24,7 @@
 #
 
 PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
-ifeq ($(findstring 4.2,$(shell $(CC) --version)),4.2)
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
 PLATFORM_CPPFLAGS += -mcpu=5235 -fPIC
 else
 PLATFORM_CPPFLAGS += -m5307 -fPIC
diff --git a/cpu/mcf52x2/config.mk b/cpu/mcf52x2/config.mk
index 650e340..8292736 100644
--- a/cpu/mcf52x2/config.mk
+++ b/cpu/mcf52x2/config.mk
@@ -34,7 +34,7 @@
 is5282:=$(shell grep CONFIG_M5282 $(TOPDIR)/include/$(cfg))
 
 
-ifeq ($(findstring 4.2,$(shell $(CC) --version)),4.2)
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
 
 ifneq (,$(findstring CONFIG_M5249,$(is5249)))
 PLATFORM_CPPFLAGS += -mcpu=5249
diff --git a/cpu/mcf532x/config.mk b/cpu/mcf532x/config.mk
index 16a0bc3..0cb90ac 100644
--- a/cpu/mcf532x/config.mk
+++ b/cpu/mcf532x/config.mk
@@ -24,7 +24,7 @@
 #
 
 PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
-ifeq ($(findstring 4.2,$(shell $(CC) --version)),4.2)
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
 PLATFORM_CPPFLAGS += -mcpu=5329 -fPIC
 else
 PLATFORM_CPPFLAGS += -m5307 -fPIC
diff --git a/cpu/mcf5445x/config.mk b/cpu/mcf5445x/config.mk
index 67efa07..b0b49f7 100644
--- a/cpu/mcf5445x/config.mk
+++ b/cpu/mcf5445x/config.mk
@@ -24,7 +24,7 @@
 #
 
 PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
-ifeq ($(findstring 4.2,$(shell $(CC) --version)),4.2)
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
 PLATFORM_CPPFLAGS += -mcpu=54455 -fPIC
 else
 PLATFORM_CPPFLAGS += -m5407 -fPIC
diff --git a/cpu/mcf547x_8x/config.mk b/cpu/mcf547x_8x/config.mk
index 567b281..83102ab 100644
--- a/cpu/mcf547x_8x/config.mk
+++ b/cpu/mcf547x_8x/config.mk
@@ -24,7 +24,7 @@
 #
 
 PLATFORM_RELFLAGS += -ffixed-d7 -msep-data
-ifeq ($(findstring 4.2,$(shell $(CC) --version)),4.2)
+ifneq ($(findstring 4.1,$(shell $(CC) --version)),4.1)
 PLATFORM_CPPFLAGS += -mcpu=5485 -fPIC
 else
 PLATFORM_CPPFLAGS += -m5407 -fPIC