diff --git a/eo-maven-plugin/pom.xml b/eo-maven-plugin/pom.xml
index b77c67f463..1e6ae6402d 100644
--- a/eo-maven-plugin/pom.xml
+++ b/eo-maven-plugin/pom.xml
@@ -42,7 +42,7 @@ SOFTWARE.
     <dependency>
       <groupId>org.eolang</groupId>
       <artifactId>lints</artifactId>
-      <version>0.0.16</version>
+      <version>1.0-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>com.yegor256</groupId>
diff --git a/eo-parser/src/main/resources/org/eolang/parser/optimize/abstracts-float-up.xsl b/eo-parser/src/main/resources/org/eolang/parser/optimize/abstracts-float-up.xsl
index efbd5f0686..e6de2e5c91 100644
--- a/eo-parser/src/main/resources/org/eolang/parser/optimize/abstracts-float-up.xsl
+++ b/eo-parser/src/main/resources/org/eolang/parser/optimize/abstracts-float-up.xsl
@@ -116,7 +116,7 @@ SOFTWARE.
   </xsl:template>
   <xsl:template match="o[eo:abstract(.)]">
     <xsl:element name="o">
-      <xsl:apply-templates select="@* except @base except @abstract"/>
+      <xsl:apply-templates select="@* except @base except @abstract except @atom"/>
       <xsl:attribute name="base">
         <xsl:value-of select="eo:name-of(.)"/>
       </xsl:attribute>
diff --git a/eo-parser/src/test/resources/org/eolang/parser/packs/float-atom-vars.yaml b/eo-parser/src/test/resources/org/eolang/parser/packs/float-atom-vars.yaml
new file mode 100644
index 0000000000..8bc6bf9340
--- /dev/null
+++ b/eo-parser/src/test/resources/org/eolang/parser/packs/float-atom-vars.yaml
@@ -0,0 +1,33 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2016-2024 Objectionary.com
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+---
+xsls:
+  - /org/eolang/parser/add-refs.xsl
+  - /org/eolang/parser/vars-float-up.xsl
+tests:
+  - //objects[not(o[@atom and @base])]
+  - //objects[not(o[@atom and o[@base]])]
+  - //o[@atom and o[not(@base)]]
+eo: |
+  # Test.
+  [] > main
+    [x] > foo /number
diff --git a/eo-parser/src/test/resources/org/eolang/parser/packs/optimize/float-atom.yaml b/eo-parser/src/test/resources/org/eolang/parser/packs/optimize/float-atom.yaml
index 7a5be97f92..ce26de2f81 100644
--- a/eo-parser/src/test/resources/org/eolang/parser/packs/optimize/float-atom.yaml
+++ b/eo-parser/src/test/resources/org/eolang/parser/packs/optimize/float-atom.yaml
@@ -28,8 +28,9 @@ xsls:
   - /org/eolang/parser/optimize/fix-missed-names.xsl
   - /org/eolang/parser/clean-up.xsl
 tests:
-  - //objects[not(o[@atom and o[@base]])]
-  - //o[@atom and o[not(@base) and x]]
+  - //objects[not(//o[@atom and @base])]
+  - //objects[not(//o[@atom and o[@base]])]
+  - //o[@atom and o[not(@base)]]
 eo: |
   # Test.
   [] > main