--- gcc/gcc/doc/invoke.texi
+++ gcc/gcc/doc/invoke.texi
@@ -13873,7 +13873,7 @@ on Intel Control-flow Enforcement Technology (CET).
 Emit extra code to check for buffer overflows, such as stack smashing
 attacks.  This is done by adding a guard variable to functions with
 vulnerable objects.  This includes functions that call @code{alloca}, and
-functions with buffers larger than or equal to 8 bytes.  The guards are
+functions with buffers larger than or equal to 4 bytes.  The guards are
 initialized when a function is entered and then checked when the function
 exits.  If a guard check fails, an error message is printed and the program
 exits.  Only variables that are actually allocated on the stack are
--- gcc/gcc/params.opt
+++ gcc/gcc/params.opt
@@ -853,7 +853,7 @@ Common Joined UInteger Var(param_ssa_name_def_chain_limit) Init(512) Param Optim
 The maximum number of SSA_NAME assignments to follow in determining a value.
 
 -param=ssp-buffer-size=
-Common Joined UInteger Var(param_ssp_buffer_size) Init(8) IntegerRange(1, 65536) Param Optimization
+Common Joined UInteger Var(param_ssp_buffer_size) Init(4) IntegerRange(1, 65536) Param Optimization
 The lower bound for a buffer to be considered for stack smashing protection.
 
 -param=stack-clash-protection-guard-size=