diff --git a/LOG b/LOG
index 2668cc02b8..b9f706b8b8 100644
--- a/LOG
+++ b/LOG
@@ -521,3 +521,5 @@
 - added CC option to configure for selecting the compiler
     configure,
     c/Mf-*
+- Suppress warnings from implicit fallthrough in case labels.
+    Mf-{a6,arm32,i3,ppc,ta6,ti3,tpp32}le
diff --git a/c/Mf-a6le b/c/Mf-a6le
index 7ee9e56d74..c6b9b93389 100644
--- a/c/Mf-a6le
+++ b/c/Mf-a6le
@@ -17,7 +17,7 @@ m = a6le
 Cpu = X86_64
 
 mdclib = -lm -ldl -lncurses -lrt
-C = ${CC} ${CPPFLAGS} -m64 -msse2 -Wpointer-arith -Wall -Wextra -Werror -O2 ${CFLAGS}
+C = ${CC} ${CPPFLAGS} -m64 -msse2 -Wpointer-arith -Wall -Wextra -Werror -Wno-implicit-fallthrough -O2 ${CFLAGS}
 o = o
 mdsrc = i3le.c
 mdobj = i3le.o
diff --git a/c/Mf-arm32le b/c/Mf-arm32le
index 4ef3a9fee1..c4564a5264 100644
--- a/c/Mf-arm32le
+++ b/c/Mf-arm32le
@@ -17,7 +17,7 @@ m = arm32le
 Cpu = ARMV6
 
 mdclib = -lm -ldl -lncurses -lrt
-C = ${CC} ${CPPFLAGS} -Wpointer-arith -Wextra -Werror -O2 ${CFLAGS}
+C = ${CC} ${CPPFLAGS} -Wpointer-arith -Wextra -Werror -Wno-implicit-fallthrough -O2 ${CFLAGS}
 o = o
 mdsrc = arm32le.c
 mdobj = arm32le.o
diff --git a/c/Mf-i3le b/c/Mf-i3le
index 25b8541881..9d3b30db49 100644
--- a/c/Mf-i3le
+++ b/c/Mf-i3le
@@ -17,7 +17,7 @@ m = i3le
 Cpu = I386
 
 mdclib = -lm -ldl -lncurses -lrt
-C = ${CC} ${CPPFLAGS} -m32 -msse2 -Wpointer-arith -Wall -Wextra -Werror -O2 -fno-stack-protector ${CFLAGS}
+C = ${CC} ${CPPFLAGS} -m32 -msse2 -Wpointer-arith -Wall -Wextra -Werror -Wno-implicit-fallthrough -O2 -fno-stack-protector ${CFLAGS}
 o = o
 mdsrc = i3le.c
 mdobj = i3le.o
diff --git a/c/Mf-ppc32le b/c/Mf-ppc32le
index b18c38ed74..bf209fb233 100644
--- a/c/Mf-ppc32le
+++ b/c/Mf-ppc32le
@@ -17,7 +17,7 @@ m = ppc32le
 Cpu = PPC32
 
 mdclib = -lm -ldl -lncurses -lrt
-C = ${CC} ${CPPFLAGS} -m32 -Wpointer-arith -Wextra -Werror -O2 ${CFLAGS}
+C = ${CC} ${CPPFLAGS} -m32 -Wpointer-arith -Wextra -Werror -Wno-implicit-fallthrough -O2 ${CFLAGS}
 o = o
 mdsrc = ppc32.c
 mdobj = ppc32.o
diff --git a/c/Mf-ta6le b/c/Mf-ta6le
index d7d5f30e42..206afc5070 100644
--- a/c/Mf-ta6le
+++ b/c/Mf-ta6le
@@ -17,7 +17,7 @@ m = ta6le
 Cpu = X86_64
 
 mdclib = -lm -ldl -lncurses -lpthread -lrt
-C = ${CC} ${CPPFLAGS} -m64 -msse2 -Wpointer-arith -Wall -Wextra -Werror -O2 -D_REENTRANT -pthread ${CFLAGS}
+C = ${CC} ${CPPFLAGS} -m64 -msse2 -Wpointer-arith -Wall -Wextra -Werror -Wno-implicit-fallthrough -O2 -D_REENTRANT -pthread ${CFLAGS}
 o = o
 mdsrc = i3le.c
 mdobj = i3le.o
diff --git a/c/Mf-ti3le b/c/Mf-ti3le
index 98c183fa1b..388360282b 100644
--- a/c/Mf-ti3le
+++ b/c/Mf-ti3le
@@ -17,7 +17,7 @@ m = ti3le
 Cpu = I386
 
 mdclib = -lm -ldl -lncurses -lpthread -lrt
-C = ${CC} ${CPPFLAGS} -m32 -msse2 -Wpointer-arith -Wall -Wextra -Werror -O2 -D_REENTRANT -pthread ${CFLAGS}
+C = ${CC} ${CPPFLAGS} -m32 -msse2 -Wpointer-arith -Wall -Wextra -Werror -Wno-implicit-fallthrough -O2 -D_REENTRANT -pthread ${CFLAGS}
 o = o
 mdsrc = i3le.c
 mdobj = i3le.o
diff --git a/c/Mf-tppc32le b/c/Mf-tppc32le
index 73fe9d5746..c888664fe1 100644
--- a/c/Mf-tppc32le
+++ b/c/Mf-tppc32le
@@ -17,7 +17,7 @@ m = tppc32le
 Cpu = PPC32
 
 mdclib = -lm -ldl -lncurses -lpthread -lrt
-C = ${CC} ${CPPFLAGS} -m32 -Wpointer-arith -Wextra -Werror -O2 -D_REENTRANT -pthread ${CFLAGS}
+C = ${CC} ${CPPFLAGS} -m32 -Wpointer-arith -Wextra -Werror -Wno-implicit-fallthrough -O2 -D_REENTRANT -pthread ${CFLAGS}
 o = o
 mdsrc = ppc32le.c
 mdobj = ppc32le.o