diff --git a/.github/workflows/linux_cli.yml b/.github/workflows/linux_cli.yml
index 186b53fb..13b9b856 100644
--- a/.github/workflows/linux_cli.yml
+++ b/.github/workflows/linux_cli.yml
@@ -21,6 +21,7 @@ jobs:
         run: rustup default 1.85.0
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release with fast_image_resize
diff --git a/.github/workflows/linux_cli_eyra.yml b/.github/workflows/linux_cli_eyra.yml
index 2a0f3fe0..b061e609 100644
--- a/.github/workflows/linux_cli_eyra.yml
+++ b/.github/workflows/linux_cli_eyra.yml
@@ -29,6 +29,7 @@ jobs:
           cd ..
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release
diff --git a/.github/workflows/linux_gui.yml b/.github/workflows/linux_gui.yml
index a604d0f0..56798d36 100644
--- a/.github/workflows/linux_gui.yml
+++ b/.github/workflows/linux_gui.yml
@@ -18,6 +18,7 @@ jobs:
         run: rustup default 1.85.0
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release Krokiet
@@ -53,6 +54,7 @@ jobs:
         run: rustup default 1.85.0
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release Krokiet heif
@@ -88,6 +90,7 @@ jobs:
         run: rustup default 1.85.0
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release Heif Libraw
@@ -133,6 +136,7 @@ jobs:
         run: rustup default 1.85.0
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release
diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index 0b9b15d0..b265a288 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -27,6 +27,7 @@ jobs:
         run: rustup default 1.85.0
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i '' 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release
@@ -124,6 +125,7 @@ jobs:
         run: rustup default 1.85.0
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i '' 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Build Release
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 6514c1f2..4ece2c56 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -28,6 +28,7 @@ jobs:
           rustup target add x86_64-pc-windows-gnu
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Compile Krokiet
@@ -90,6 +91,7 @@ jobs:
         run: rustup default 1.85.0-x86_64-pc-windows-gnu
 
       - name: Enable LTO
+        if: ${{ github.ref == 'refs/heads/master' }}
         run: sed -i 's/#lto = "thin"/lto = "thin"/g' Cargo.toml
 
       - name: Compile Krokiet