diff --git a/quicktex/s3tc/bc1/BC1Block.h b/quicktex/s3tc/bc1/BC1Block.h
index 15966a9..4bde4b1 100644
--- a/quicktex/s3tc/bc1/BC1Block.h
+++ b/quicktex/s3tc/bc1/BC1Block.h
@@ -47,13 +47,11 @@ class alignas(8) BC1Block {
     std::array<uint8_t, SelectorSize> _selectors;
 
    public:
-    /// Create a new BC1Block
-    constexpr BC1Block() {
+    /// Create a new BC1Blok
+    constexpr BC1Block() : _color0(), _color1(), _selectors() {
         static_assert(sizeof(BC1Block) == 8);
         static_assert(sizeof(std::array<BC1Block, 10>) == 8 * 10);
         static_assert(alignof(BC1Block) >= 8);
-        _color0 = _color1 = {0, 0};
-        _selectors = {0, 0, 0, 0};
     }
 
     /**
diff --git a/quicktex/s3tc/bc3/BC3Block.h b/quicktex/s3tc/bc3/BC3Block.h
index db64637..07d005b 100644
--- a/quicktex/s3tc/bc3/BC3Block.h
+++ b/quicktex/s3tc/bc3/BC3Block.h
@@ -36,12 +36,10 @@ class alignas(8) BC3Block {
     BC4Block alpha_block;
     BC1Block color_block;
 
-    constexpr BC3Block() {
+    constexpr BC3Block() : alpha_block(BC4Block()), color_block(BC1Block()) {
         static_assert(sizeof(BC3Block) == 16);
         static_assert(sizeof(std::array<BC3Block, 10>) == 16 * 10);
         static_assert(alignof(BC3Block) >= 8);
-        alpha_block = BC4Block();
-        color_block = BC1Block();
     }
 
     BC3Block(const BC4Block &alpha, const BC1Block &color) {
@@ -56,7 +54,7 @@ class alignas(8) BC3Block {
         color_block = blocks.second;
     }
 
-    bool operator==(const BC3Block& other) const = default;
-    bool operator!=(const BC3Block& other) const = default;
+    bool operator==(const BC3Block &other) const = default;
+    bool operator!=(const BC3Block &other) const = default;
 };
 }  // namespace quicktex::s3tc
\ No newline at end of file
diff --git a/quicktex/s3tc/bc4/BC4Block.h b/quicktex/s3tc/bc4/BC4Block.h
index a6a500e..c4fbfa0 100644
--- a/quicktex/s3tc/bc4/BC4Block.h
+++ b/quicktex/s3tc/bc4/BC4Block.h
@@ -48,12 +48,10 @@ class alignas(8) BC4Block {
     // Constructors
 
     /// Create a new BC4Block
-    constexpr BC4Block() {
+    constexpr BC4Block() : alpha0(0), alpha1(0), _selectors() {
         static_assert(sizeof(BC4Block) == 8);
         static_assert(sizeof(std::array<BC4Block, 10>) == 8 * 10);
         static_assert(alignof(BC4Block) >= 8);
-        alpha0 = alpha1 = 0;
-        _selectors = {0, 0, 0, 0, 0, 0};
     }
 
     /**
diff --git a/quicktex/s3tc/bc5/BC5Block.h b/quicktex/s3tc/bc5/BC5Block.h
index 429f2ae..17edadb 100644
--- a/quicktex/s3tc/bc5/BC5Block.h
+++ b/quicktex/s3tc/bc5/BC5Block.h
@@ -35,11 +35,10 @@ class alignas(8) BC5Block {
     BC4Block chan0_block;
     BC4Block chan1_block;
 
-    constexpr BC5Block() {
+    constexpr BC5Block() : chan0_block(BC4Block()), chan1_block(BC4Block()) {
         static_assert(sizeof(BC5Block) == 16);
         static_assert(sizeof(std::array<BC5Block, 10>) == 16 * 10);
         static_assert(alignof(BC5Block) >= 8);
-        chan0_block = chan1_block = BC4Block();
     }
 
     BC5Block(const BC4Block &chan0, const BC4Block &chan1) {
@@ -54,7 +53,7 @@ class alignas(8) BC5Block {
         chan1_block = pair.second;
     }
 
-    bool operator==(const BC5Block& other) const = default;
-    bool operator!=(const BC5Block& other) const = default;
+    bool operator==(const BC5Block &other) const = default;
+    bool operator!=(const BC5Block &other) const = default;
 };
 }  // namespace quicktex::s3tc
\ No newline at end of file