diff --git a/CHANGELOG.md b/CHANGELOG.md
index 67f6dbf..d737eca 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -31,6 +31,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Switched to using `wpMiscUtilsRotl64` in `xorshift`
 - Remove all uses of names starting with underscore
 - Ensure `wpArrayClear` memsets members to 0
+- Removed '%' from `WP_STR8_SPEC`
 
 ## [2.4.0] - 2026-08-30
 
diff --git a/src/base/hash/hasher/siphash.h b/src/base/hash/hasher/siphash.h
index 8abae82..188fe64 100644
--- a/src/base/hash/hasher/siphash.h
+++ b/src/base/hash/hasher/siphash.h
@@ -32,17 +32,17 @@ typedef struct WpSipHasherData {
 } WpSipHasherData;
 
 #ifdef WP_PLATFORM_CPP
-#define wpSip24HasherData(KEY) (WpSipHasherData{KEY, WP_SIP_HASHER_MAGIC, 2, 4})
-#define wpSip48HasherData(KEY) (WpSipHasherData{KEY, WP_SIP_HASHER_MAGIC, 4, 8})
+#define wpSip24HasherData(KEY) (WpSipHasherData{(KEY), WP_SIP_HASHER_MAGIC, 2, 4})
+#define wpSip48HasherData(KEY) (WpSipHasherData{(KEY), WP_SIP_HASHER_MAGIC, 4, 8})
 #else
 #define wpSip24HasherData(KEY) ((WpSipHasherData){                                                 \
-	.key          = KEY,                                                                             \
+	.key          = (KEY),                                                                           \
 	.magic        = WP_SIP_HASHER_MAGIC,                                                             \
 	.compression  = 2,                                                                               \
 	.finalisation = 4,                                                                               \
 })
 #define wpSip48HasherData(KEY) ((WpSipHasherData){                                                 \
-	.key          = KEY,                                                                             \
+	.key          = (KEY),                                                                           \
 	.magic        = WP_SIP_HASHER_MAGIC,                                                             \
 	.compression  = 4,                                                                               \
 	.finalisation = 8,                                                                               \
diff --git a/src/base/strings/str8/str8.h b/src/base/strings/str8/str8.h
index 2b68298..2695fcc 100644
--- a/src/base/strings/str8/str8.h
+++ b/src/base/strings/str8/str8.h
@@ -27,7 +27,7 @@ typedef const WpStr8 WpStr8RO;
 /**
  * Utilities to be used with printf functions
  */
-#define WP_STR8_SPEC "%.*s"
+#define WP_STR8_SPEC ".*s"
 #define wpStr8Varg(STRING) (int)((STRING).size), (STRING).buf
 
 /**
diff --git a/src/os/shell/commander/commander.c b/src/os/shell/commander/commander.c
index 0a935f3..9502988 100644
--- a/src/os/shell/commander/commander.c
+++ b/src/os/shell/commander/commander.c
@@ -94,7 +94,7 @@ wp_intern WpCmdError getCommandOutput(FILE *fp, WpCmdOutHandling out_handling, W
 
 		wpStr8ConcatCapped(out_buf, &out);
 	} else if (out_handling == WP_SHELL_OUTPUT_PRINT) {
-		printf(WP_STR8_SPEC, wpStr8Varg(out));
+		printf("%" WP_STR8_SPEC, wpStr8Varg(out));
 	}
 
 	return WP_SHELL_ERR_NO_ERROR;
diff --git a/src/os/shell/termcolour/posix/termcolour_posix.c b/src/os/shell/termcolour/posix/termcolour_posix.c
index a62fc4a..7214553 100644
--- a/src/os/shell/termcolour/posix/termcolour_posix.c
+++ b/src/os/shell/termcolour/posix/termcolour_posix.c
@@ -30,7 +30,7 @@ wp_intern WpStr8RO colours[COUNT_TERM_COLOUR] = {
 };
 
 void printColouredText(WpStr8RO *text, WpTerminalColour colour) {
-	printf(WP_STR8_SPEC WP_STR8_SPEC, wpStr8Varg(colours[colour]), wpStr8Varg((*text)));
+	printf("%" WP_STR8_SPEC "%" WP_STR8_SPEC, wpStr8Varg(colours[colour]), wpStr8Varg((*text)));
 }
 
 #endif // !WP_PLATFORM_POSIX
diff --git a/src/os/shell/termcolour/win/termcolour_win.c b/src/os/shell/termcolour/win/termcolour_win.c
index a750da0..3acd995 100644
--- a/src/os/shell/termcolour/win/termcolour_win.c
+++ b/src/os/shell/termcolour/win/termcolour_win.c
@@ -56,7 +56,7 @@ void printColouredText(WpStr8RO *text, WpTerminalColour colour) {
 	}
 
 	SetConsoleTextAttribute(data.handle, data.current_colour);
-	printf(WP_STR8_SPEC, wpStr8Varg((*text)));
+	printf("%" WP_STR8_SPEC, wpStr8Varg((*text)));
 }
 
 wp_intern void initData(TermcolourData *data) {
diff --git a/src/testing/tester/tester.c b/src/testing/tester/tester.c
index 910d503..ddc5ed8 100644
--- a/src/testing/tester/tester.c
+++ b/src/testing/tester/tester.c
@@ -47,7 +47,7 @@ wp_intern void handleTestResult(WpTestFuncResult result) {
 	printf("[");
 	wpShellTermcolourPrintText(&result_text, colour);
 	wpShellTermcolourClearColour();
-	printf("] " WP_STR8_SPEC "\n", wpStr8Varg(result.name));
+	printf("] %" WP_STR8_SPEC "\n", wpStr8Varg(result.name));
 
 	if (!result.passed) {
 		exit(EXIT_FAILURE);