diff --git a/platformio.ini b/platformio.ini
index b63a1e41d..7688d3974 100755
--- a/platformio.ini
+++ b/platformio.ini
@@ -99,7 +99,8 @@ build_flags               = ${esp_defaults.build_flags}
                             -D NDEBUG
                             -mtarget-align
                             -DFP_IN_IROM
-
+                            ; the following removes the 4-bytes alignment for PSTR(), waiting for a cleaner flag from Arduino Core
+                            -DPSTR\(s\)=\(__extension__\(\{static\ const\ char\ __c\[\]\ __attribute__\(\(__aligned__\(1\)\)\)\ __attribute__\(\(section\(\ \"\\\\\".irom0.pstr.\"\ __FILE__\ \".\"\ __STRINGIZE\(__LINE__\)\ \".\"\ \ __STRINGIZE\(__COUNTER__\)\ \"\\\\\"\,\ \\\\\"aSM\\\\\"\,\ \@progbits\,\ 1\ \#\"\)\)\)\ =\ \(s\)\;\ \&__c\[0\]\;\}\)\)
 
 [irremoteesp_full]
 build_flags               = -DUSE_IR_REMOTE_FULL