diff --git a/platformio.ini b/platformio.ini
index 8a22cf67e..c9eb6d5f4 100755
--- a/platformio.ini
+++ b/platformio.ini
@@ -111,6 +111,9 @@ build_flags               = ${esp_defaults.build_flags}
                             -lstdc++                            
                             ; 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\[0\]\;\}\)\)
+                            -DPSTR_ALIGN=1
+                            ; restrict to minimal mime-types
+                            -DMIMETYPE_MINIMAL
 
 [irremoteesp_full]
 build_flags               = -DUSE_IR_REMOTE_FULL