diff --git a/nixos/modules/system/boot/stage-1.nix b/nixos/modules/system/boot/stage-1.nix
index 6756f68cdf72..b6a7081b896c 100644
--- a/nixos/modules/system/boot/stage-1.nix
+++ b/nixos/modules/system/boot/stage-1.nix
@@ -164,7 +164,7 @@ let
 
       # Strip binaries further than normal.
       chmod -R u+w $out
-      stripDirs "lib bin" "-s"
+      stripDirs "$STRIP" "lib bin" "-s"
 
       # Run patchelf to make the programs refer to the copied libraries.
       find $out/bin $out/lib -type f | while read i; do
diff --git a/pkgs/development/compilers/openjdk/10.nix b/pkgs/development/compilers/openjdk/10.nix
index 2c76d59512b6..7ed493fe92e9 100644
--- a/pkgs/development/compilers/openjdk/10.nix
+++ b/pkgs/development/compilers/openjdk/10.nix
@@ -142,7 +142,7 @@ let
 
     # FIXME: this is unnecessary once the multiple-outputs branch is merged.
     preFixup = ''
-      prefix=$jre stripDirs "$stripDebugList" "''${stripDebugFlags:--S}"
+      prefix=$jre stripDirs "$STRIP" "$stripDebugList" "''${stripDebugFlags:--S}"
       patchELF $jre
       propagatedBuildInputs+=" $jre"
 
diff --git a/pkgs/development/compilers/openjdk/8.nix b/pkgs/development/compilers/openjdk/8.nix
index 57771e383279..5b31bc18b8c2 100644
--- a/pkgs/development/compilers/openjdk/8.nix
+++ b/pkgs/development/compilers/openjdk/8.nix
@@ -206,7 +206,7 @@ let
 
     # FIXME: this is unnecessary once the multiple-outputs branch is merged.
     preFixup = ''
-      prefix=$jre stripDirs "$stripDebugList" "''${stripDebugFlags:--S}"
+      prefix=$jre stripDirs "$STRIP" "$stripDebugList" "''${stripDebugFlags:--S}"
       patchELF $jre
       propagatedBuildInputs+=" $jre"