diff --git a/ext/eyalroz/module.lb b/ext/eyalroz/module.lb
index 8f37ffb357..2c6307ae67 100644
--- a/ext/eyalroz/module.lb
+++ b/ext/eyalroz/module.lb
@@ -18,16 +18,19 @@ def prepare(module, options):
     return True
 
 def build(env):
+    is_hosted = env[":target"].identifier.platform == "hosted"
+    with_long_long = env.get(":io:with_long_long",
+            "avr" not in env[":target"].identifier.platform)
+
     env.collect(":build:path.include", "modm/ext")
     env.outbasepath = "modm/ext/printf"
 
     env.copy("printf/src/printf/printf.h", "printf.h")
     files = env.copy("printf/src/printf/printf.c", "printf.c")
-    env.collect(":build:ccflags", "-Wno-double-promotion", "-Wno-overflow", operations=files)
+    env.collect(":build:ccflags", "-Wno-overflow", operations=files)
 
-    with_long_long = "avr" not in env[":target"].identifier.platform
     env.substitutions = {
-        "with_long_long": env.get(":io:with_long_long", with_long_long),
-        "is_hosted": env[":target"].identifier.platform == "hosted",
+        "with_long_long": with_long_long,
+        "is_hosted": is_hosted,
     }
     env.template("printf_config.h.in")
diff --git a/ext/eyalroz/printf b/ext/eyalroz/printf
index 72716295bc..2c7d857481 160000
--- a/ext/eyalroz/printf
+++ b/ext/eyalroz/printf
@@ -1 +1 @@
-Subproject commit 72716295bcaa14f96ad9725b40dcc9dff0930eac
+Subproject commit 2c7d857481e4c0c82ec135d564a33a74470bee64
diff --git a/ext/eyalroz/printf_config.h.in b/ext/eyalroz/printf_config.h.in
index 758cb54603..1eb1658059 100644
--- a/ext/eyalroz/printf_config.h.in
+++ b/ext/eyalroz/printf_config.h.in
@@ -20,19 +20,13 @@
 #endif
 
 #ifndef PRINTF_DEFAULT_FLOAT_PRECISION
-#define PRINTF_DEFAULT_FLOAT_PRECISION  5
-#endif
-
-#ifndef PRINTF_ALIAS_STANDARD_FUNCTION_NAMES
-#define PRINTF_ALIAS_STANDARD_FUNCTION_NAMES {{ 0 if is_hosted else 1 }}
+#define PRINTF_DEFAULT_FLOAT_PRECISION 5
 #endif
 
 #ifndef PRINTF_ALIAS_STANDARD_FUNCTION_NAMES_HARD
-#define PRINTF_ALIAS_STANDARD_FUNCTION_NAMES_HARD 0
+#define PRINTF_ALIAS_STANDARD_FUNCTION_NAMES_HARD {{ 0 if is_hosted else 1 }}
 #endif
 
 #ifndef PRINTF_ALIAS_STANDARD_FUNCTION_NAMES_SOFT
 #define PRINTF_ALIAS_STANDARD_FUNCTION_NAMES_SOFT 0
 #endif
-
-