diff --git a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeFluidStorage.java b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeFluidStorage.java
index 08da59181..bf98efe9e 100755
--- a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeFluidStorage.java
+++ b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeFluidStorage.java
@@ -8,6 +8,9 @@ import refinedstorage.block.EnumFluidStorageType;
 import refinedstorage.item.ItemBlockFluidStorage;
 import refinedstorage.item.ItemProcessor;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
 public class SoldererRecipeFluidStorage implements ISoldererRecipe {
     private EnumFluidStorageType type;
     private ItemStack[] rows;
@@ -22,11 +25,13 @@ public class SoldererRecipeFluidStorage implements ISoldererRecipe {
     }
 
     @Override
+    @Nullable
     public ItemStack getRow(int row) {
         return rows[row];
     }
 
     @Override
+    @Nonnull
     public ItemStack getResult() {
         return ItemBlockFluidStorage.initNBT(new ItemStack(RefinedStorageBlocks.FLUID_STORAGE, 1, type.getId()));
     }
diff --git a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipePrintedProcessor.java b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipePrintedProcessor.java
index 6442646f9..980d83c2f 100755
--- a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipePrintedProcessor.java
+++ b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipePrintedProcessor.java
@@ -6,6 +6,9 @@ import refinedstorage.RefinedStorageItems;
 import refinedstorage.api.solderer.ISoldererRecipe;
 import refinedstorage.item.ItemProcessor;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
 public class SoldererRecipePrintedProcessor implements ISoldererRecipe {
     private int type;
     private ItemStack requirement;
@@ -32,6 +35,7 @@ public class SoldererRecipePrintedProcessor implements ISoldererRecipe {
     }
 
     @Override
+    @Nullable
     public ItemStack getRow(int row) {
         if (row == 1) {
             return requirement;
@@ -41,6 +45,7 @@ public class SoldererRecipePrintedProcessor implements ISoldererRecipe {
     }
 
     @Override
+    @Nonnull
     public ItemStack getResult() {
         return result;
     }
diff --git a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeProcessor.java b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeProcessor.java
index f57559160..8920613dc 100755
--- a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeProcessor.java
+++ b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeProcessor.java
@@ -6,6 +6,9 @@ import refinedstorage.RefinedStorageItems;
 import refinedstorage.api.solderer.ISoldererRecipe;
 import refinedstorage.item.ItemProcessor;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
 public class SoldererRecipeProcessor implements ISoldererRecipe {
     private int type;
     private ItemStack[] rows;
@@ -37,11 +40,13 @@ public class SoldererRecipeProcessor implements ISoldererRecipe {
     }
 
     @Override
+    @Nullable
     public ItemStack getRow(int row) {
         return rows[row];
     }
 
     @Override
+    @Nonnull
     public ItemStack getResult() {
         return result;
     }
diff --git a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeStorage.java b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeStorage.java
index 259b9f7cb..1cb4defa0 100755
--- a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeStorage.java
+++ b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeStorage.java
@@ -8,6 +8,9 @@ import refinedstorage.block.EnumItemStorageType;
 import refinedstorage.item.ItemBlockStorage;
 import refinedstorage.item.ItemProcessor;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
 public class SoldererRecipeStorage implements ISoldererRecipe {
     private EnumItemStorageType type;
     private ItemStack[] rows;
@@ -22,11 +25,13 @@ public class SoldererRecipeStorage implements ISoldererRecipe {
     }
 
     @Override
+    @Nullable
     public ItemStack getRow(int row) {
         return rows[row];
     }
 
     @Override
+    @Nonnull
     public ItemStack getResult() {
         return ItemBlockStorage.initNBT(new ItemStack(RefinedStorageBlocks.STORAGE, 1, type.getId()));
     }
diff --git a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeUpgrade.java b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeUpgrade.java
index 57a3d074a..ace718aa2 100755
--- a/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeUpgrade.java
+++ b/src/main/java/refinedstorage/apiimpl/solderer/SoldererRecipeUpgrade.java
@@ -6,6 +6,9 @@ import refinedstorage.RefinedStorageItems;
 import refinedstorage.api.solderer.ISoldererRecipe;
 import refinedstorage.item.ItemUpgrade;
 
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
 public class SoldererRecipeUpgrade implements ISoldererRecipe {
     private ItemStack[] rows;
     private ItemStack result;
@@ -20,11 +23,13 @@ public class SoldererRecipeUpgrade implements ISoldererRecipe {
     }
 
     @Override
+    @Nullable
     public ItemStack getRow(int row) {
         return rows[row];
     }
 
     @Override
+    @Nonnull
     public ItemStack getResult() {
         return result;
     }